Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12463e649f6b416…

MALICIOUS

PDF

83.3 KB Created: 2020-12-21 02:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a054c19ba4c1780e5e42940c3352444a SHA-1: 760f812be4b55a97dfc92362c6869f96a20cea3d SHA-256: f12463e649f6b4160570c483295ea577333c68a56fa6d4c42f94dfa42ca973b6
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain keywords related to product pricing, suggesting a lure for phishing or to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?utm_term=samsung+level+u+pro+anc+price+in+qatar In PDF document text
    • https://vazoxavaver.weebly.com/uploads/1/3/4/8/134863882/f4967c6ed2.pdfIn PDF document text
    • https://xofadasuvakijo.weebly.com/uploads/1/3/4/5/134587438/ad53b2d113a7e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fdb21b948bf8.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/2877743.pdfIn PDF document text
    • https://sukizasatesez.weebly.com/uploads/1/3/4/6/134686833/goniwemirud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463810/normal_5fc087c28984b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fbfe895e5c7695ca99606f9/t/5fc20c50173fb5383be9a58a/1606552656612/wekisidakijatudu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcba3646033b444b395ad1/t/5fdcfce64a5baf461ba0f7e4/1608318183457/56522680822.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/cool_wallpaper_hd_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/kogujabupovugi.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/34033257058.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/carbon_fiber_vinyl_wrap_walmart.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71E 6812 bytes
SHA-256: ca24bdafb8bbb869cbf463ec553f7ebe8fac9d92b2ff95474d77e3f511273adc
font_01_sfnt_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 2972 bytes
SHA-256: a54b7893a90eb529da7229f7562a5dd47fff2e342442ef4ad71424d977b65b68
font_02_sfnt_off0000e2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CA 5424 bytes
SHA-256: 80b4373d1a0ecdf4349b519e2345601220f48c0129844185899a2f308435b397
font_03_sfnt_off0000f525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF525 11296 bytes
SHA-256: 95730734f503136e2ce58b4396b89f1ede1b4800a834ad2546855f19fc29196a
font_04_sfnt_off00011b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6D 16280 bytes
SHA-256: 8ac9e39ba9a6a8385cbcac8f53a097c1eab46803ac3345a75b812af5ddde8b97
font_05_sfnt_off0001311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1311C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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