Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0b2efbb06e7957…

MALICIOUS

PDF

69.6 KB Created: 2020-12-21 03:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7184bcccedc6d0db9e5dd94f97602688 SHA-1: 94d87d9b837cce64c843a16890163eaf8e2c8f60 SHA-256: 2a0b2efbb06e7957795baafefee083a8f6f72b3d0b0ddd16e9930c96da97bc30
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF file flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech support scams. While no scripts were directly extracted, the PDF structure and external links suggest it may exploit vulnerabilities or lead to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafffi.ru/strik?utm_term=drivetime+average+monthly+payments PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383577/normal_5f925136d445a.pdfIn PDF document text
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/9778225.pdfIn PDF document text
    • https://gifedoku.weebly.com/uploads/1/3/4/2/134234788/dozuku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8c8d72da0d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_5fa401be747fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mokixetat/second_hand_sheet_metal_bending_machines.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/feeding_guide_3_month_old.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/mamabuladoluluxexeki.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/kebuvulavujiwutavakos.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/mibovoforolojevasu.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/xilexugerej.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/81637966789.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F9 5396 bytes
SHA-256: 5585936c38c1f01207338d0514b8bc50fc3234551dff921bc60efbebad330215
font_01_sfnt_off0000e437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE437 11204 bytes
SHA-256: 882b1d2c6c334a5fd8e0418d1c51573bc5c20667800bd1cd6046e5e5871b737a

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