Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d3406964c254260…

MALICIOUS

PDF

74.5 KB Created: 2020-12-10 10:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb503bb9340546213f546314074d8901 SHA-1: 9c2aff2484ec5ee05b87abf1a92ddf716997b8c0 SHA-256: 8d3406964c254260ffa2253ade3cfe5fabda652103889ca39f9ee1e835573e49
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffine.ru/strik?utm_term=coc+only+gems+hack+apk PDF link annotation
    • https://bimenejujuw.weebly.com/uploads/1/3/4/5/134592033/3656630.pdfIn PDF document text
    • https://kotugelofamoxu.weebly.com/uploads/1/3/4/4/134403640/runobud-vagijajejomi-fuzosulejofiwag-nipagititisubax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2c7625bcb0228a28e9b31/t/5fd1b613b0f0f842d7a4fc7f/1607579157246/translate_spanish_to_english_list_of_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d692b36-c400-4bac-97c9-29d9d1913514/13155979536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052763e5-d5f5-4a96-beeb-f1b32a9ca608/52351732681.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3d0518e72e5fdba2ef23/1606302982780/scorpio_sagittarius_cusp_dates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3e377acac6192a8c56c8/1606303287917/47928476540.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3cd92c50b1a1e76da16/t/5fc402a9145a8629dc2d2c75/1606681257937/zetexivonutijafitod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58f3da87939686427c656/t/5fc67cdfbc819f1cf4b8c0f7/1606843618336/business_development_manager_job_description_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4c26133-3b10-4d1f-b402-e633844f59b7/sowuxajuputoputafumejovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528e8dab-8c6f-445f-a9f3-8ffd90b7f4f7/descargar_discografia_banda_ms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5bc46e9-785b-4813-952a-4c65cfcb1cd3/pugulewevimelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f15c46-2ba2-4d88-957b-4e044d21145a/dezawuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6901b3c-8660-4d0f-909b-abcbba362e21/galewaxepikifevo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1303a2cf09257bd6de59a/t/5fcf48fb10aae775716da5d6/1607420156051/striped_lynx_spider_bite.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc385e368612547ed6e891e/t/5fce2449d235d37878ee6fbb/1607345226827/fast_racing_3d.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 5320 bytes
SHA-256: 585aa6dda4d865714bea263db5866c44342365bc66d55036981fa6868678ab04
font_01_sfnt_off0000ed0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 2344 bytes
SHA-256: 0f83753d4b2732989e9566b7be3941a6e3116db30917599990717058c2ee8814
font_02_sfnt_off0000f751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF751 11036 bytes
SHA-256: ea7b59b0be6e38b45126b87641be438908d5940d58ca1d056b6b21b59ff37426

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