Malicious PDF — malware analysis report

Static analysis result for SHA-256 3252da32f4570c6b…

MALICIOUS

PDF

115.7 KB Created: 2020-12-17 04:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a90f08122048181b2f04207d75c010b2 SHA-1: 97b26a515caf8b5fba75ed59ad8e89bc8f261dc7 SHA-256: 3252da32f4570c6b5ff522246488b4acc206bdd5bdf189cddfd6e3b945947e0a
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a phishing or scam attempt. The presence of multiple external links, many pointing to PDF files, indicates a link farm strategy to distribute malicious content or traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/123?utm_term=rook+in+chess+meaning+in+hindi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5fc2a0a7a987f.pdfIn PDF document text
    • https://vuvopovakufusoz.weebly.com/uploads/1/3/4/3/134342968/xirowugaziwinojas.pdfIn PDF document text
    • https://rafuwufavirose.weebly.com/uploads/1/3/4/3/134334278/riruf.pdfIn PDF document text
    • https://wexipemeb.weebly.com/uploads/1/3/4/8/134860193/nofovirelufovikeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fd1df2f8f50d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445341/normal_5fd273787b3e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450724/normal_5fce878352259.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/b919b1ed8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386620/normal_5f8efb2cd9f9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static1.squarespace.com/static/5fc52fdb5687f52b6b9d2ab4/t/5fca158281b71b40859cf008/1607079298577/guwozofazatuvufi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc702be8651a047519567d2/t/5fd61a0cacac596b0cb1814b/1607866895947/about_me_template_instagram_story.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcecc3225f96d1b32d21edb/t/5fd6ef23c4373837b91fb834/1607921444153/ap_calculus_ab_derivatives_test.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf586e5147b148042a623a/1606375536811/get_out_of_jail_free_card.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce26cecc0d2519aa9f8c7d/t/5fd6972872b1137fa97e538a/1607898920818/anger_iceberg_activity.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd06053ca23154c95c9dd4/1606223366280/benchtop_pro_jigsaw_blades.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf3603c02f22b9dd28b91/1606284144848/i7-4510u_vs_i5-8250u.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_012_off00019121.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19121 19660 bytes
SHA-256: 59a6a689ddd7316fd8736d798c73408374e01af044d2b967752a01cacdfacee1
font_00_sfnt_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 5124 bytes
SHA-256: 307337acb9ed260bb5d96a2cad3194b6795860d40f989dd11281dc3e7fe4bc87
font_01_sfnt_off00010034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10034 5296 bytes
SHA-256: ad9e37bc3c4bdd517dde9f0721e6887ac5b93fe7b1cfb406a85da09738600c91
font_02_sfnt_off00011215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11215 2936 bytes
SHA-256: 6fa2a238283694e80b473f5c1ede83665c2535f23b2e85dc2f347a8f35dfb41c
font_03_sfnt_off00011e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E29 4248 bytes
SHA-256: 4d650ee0319e6e44ab9f672b1c7745ac5eff21a5e8f7a1ab51c0064473e72270
font_04_sfnt_off00012bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBA 2812 bytes
SHA-256: f4a48368c802e4a73ac63a3813efbbc9fa658e0393c978040c2d5057b3ad0aaa
font_05_sfnt_off000136cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136CB 1920 bytes
SHA-256: 37dfbaf4a421b4ca5b1a62d0882570898dd2f5cfff9afdebe0a59d8d02d2101b
font_06_sfnt_off0001404e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1404E 2024 bytes
SHA-256: f5e34d4670a236ea6c40ff5545423daffb148557dd5ce997ec5c6dceba503deb
font_07_sfnt_off00014a1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A1D 7660 bytes
SHA-256: 800a96246cf5f83dbcc68d5963aeb4d51599a14daadbf4fee5d95887cd761cda
font_08_sfnt_off00015f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F56 16932 bytes
SHA-256: f62d43d759f79debb2420d7d415ab626c728ec1e48621b742745db5991cff35b
font_10_sfnt_off0001b222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B222 2836 bytes
SHA-256: 6f7bead0265ecfed7a010657c47b35503642b01fe95f35754c4a695d68d738a0

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