Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe5a463dd88dcb0…

MALICIOUS

PDF

98.8 KB Created: 2021-03-20 14:54:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 890b1a25d64a7647f92a008501c705e4 SHA-1: ee74e1232cb5625a6bb61dd41ebadb0cefce6cb7 SHA-256: afe5a463dd88dcb016d6abccaba45ee0536ed5a8bac0a96bb3262e630e8c92e3
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the PDF structure itself are indicative of techniques used to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/aws?utm_term=how+do+you+describe+a+harvest+moon+light+of+hope PDF link annotation
    • https://cdn.sqhk.co/wusakituzu/chcifhf/cara_isi_pulsa_telkomsel_lewat_m_banking_bca.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/NEcibji/kopibelibixorigajowipoz.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/kUjg3id/buildings_for_minecraft_pe_app.pdfIn PDF document text
    • http://qupieasy.online/discovering_statistics_using_r_epubux0dy.pdfIn PDF document text
    • http://coloradocustomelectric.com/vafukobevegetety0hu6.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/fpwDnlt/38291115487.pdfIn PDF document text
    • http://usechambre.xyz/6379525956g5kgg.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/jipiaXj/winkler_titration_method.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/4pvngeS/gulezamakipototewiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_34ac29b60ea0435d8d567cf9c067261f.pdf?index=trueIn PDF document text
    • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_3cb07b4c4fc2410abd71bb9f9ee934e9.pdf?index=trueIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_683bc04798154c5bb74685d1038e69f1.pdf?index=trueIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_60f0aaef9fd742f6bdff4a568573dc1a.pdf?index=trueIn PDF document text
    • https://a2c67b61-a01d-4053-b7ad-f1487bca8054.filesusr.com/ugd/24853a_9906e43339bd496abe7fa6fb216033e8.pdf?index=trueIn PDF document text
    • https://4b4ea461-5266-411b-8735-d5290551f550.filesusr.com/ugd/7fedcf_7c7c51cbf7c14fd29ee6200bc11a8f6e.pdf?index=trueIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_a45942cde1f5416c82767992e17ea0df.pdf?index=trueIn PDF document text
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_70fdbba16df6481984aeec53dc4fa2ae.pdf?index=trueIn PDF document text
    • https://8d5bcf17-53f2-4f21-b585-7a27aef14131.filesusr.com/ugd/7baf93_a05be1d6bef649688aa888ac43d76d79.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6C 5924 bytes
SHA-256: a2f50e53cf18d45fe099ecf712e32ba97e6a6ac48d11bf5e58506fbf5f55d7fc
font_01_sfnt_off00012382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12382 8696 bytes
SHA-256: 34c3c428ba9f6a0901901c660a8a698aae45c3d2ddebec941db0f3d37830b63a
font_02_sfnt_off00013c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C0D 13196 bytes
SHA-256: 25a5710f54389b7e2acf9fe5419bfa30f1297f44f77ec1b5ea215d55d6c97900
font_03_sfnt_off000167d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167D0 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140

Open this report in the interactive analyzer, or submit your own file for analysis.