Malicious PDF — malware analysis report

Static analysis result for SHA-256 abaa05011afb939f…

MALICIOUS

PDF

79.2 KB Created: 2020-12-28 14:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a7ea41f90b7fba5309be083df09a5975 SHA-1: a2b832e3f2c5fa805219732a3995f28224ff5e41 SHA-256: abaa05011afb939fabf1bed5d6ef7f1ae53030be577b2ad37830e717bac38e21
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 0.9997

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=hy+vee+trivia+iowa+city PDF link annotation
    • https://kipunazumalimak.weebly.com/uploads/1/3/4/7/134755782/8617695.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419623/normal_5fa1eb8fc7eb5.pdfIn PDF document text
    • https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/fuzobivesas.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/f320f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5f91be775cf35.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/554da5e32da2bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c064235-d26c-4db2-922f-d4d60c92d434/terapia_de_grupo_madrid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a478a70-f0c4-4120-bb95-2e9a1e65e45f/stoichiometry_practice_questions_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3027c670-97b3-4924-a9da-24893abc6f64/the_broadkill_review.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/88994341551.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/lafenawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f5e85e5-0227-49f7-8d8b-71432634311a/tajezegu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000e5e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E5 4800 bytes
SHA-256: 60860b69d5ad18350544b2df6b2204801d17752ce9b13ca5e9b5c9a3375c47be
font_01_sfnt_off0000f661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF661 10984 bytes
SHA-256: bd9ebc8552a2ff9e9269dd8a154ef5c2a3673a11c863cae2a04ca6e7878b70cf
font_02_sfnt_off00011bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BBE 16064 bytes
SHA-256: ffad8dbc339acf9f6a7b1c1b901d719cd2bc945b1b13bfb8173beab322595c47

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