Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a41a153d0a0ee3…

MALICIOUS

PDF

37.2 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 58fef6ea2607ab44a04200417fdc95ac SHA-1: 013cabb1726b64eb411b05e07d89610e4664f5aa SHA-256: c1a41a153d0a0ee3b00eb9b6b9178b72fc6a5d2d73d6ecac9950accc1b41d5b5
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.003 Phishing: Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. Additionally, the document body contains a callback lure, instructing the user to call a phone number for support or billing issues. This combination of tactics indicates a phishing or scam operation, likely aiming to defraud users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 http://leggingwholesale.com/uploads/1/3/0/4/130483256/nikuxetejebid.pdf In PDF document text
    • http://nexgentestosterone.com/uploads/1/3/0/2/130291803/d9b744.pdfIn PDF document text
    • http://ashleyandjeffery.com/uploads/1/3/0/7/130775880/dixunened-zomisizebe.pdfIn PDF document text
    • http://talksocceramerica.com/uploads/1/3/0/3/130379143/jibonixetotava_pifuz.pdfIn PDF document text
    • http://iactech.com.my/uploads/1/3/0/4/130436271/b5b9aca.pdfIn PDF document text
    • http://grupatech.com/uploads/1/3/0/4/130436402/d35819.pdfIn PDF document text
    • http://onechoiceaway.net/uploads/1/3/0/7/130738639/acb0419fb9.pdfIn PDF document text
    • http://www.seaboundtrampoline.com/uploads/1/3/0/5/130588220/4283200.pdfIn PDF document text
    • http://nolagirlcustomcreations.com/uploads/1/3/0/2/130291433/8345905.pdfIn PDF document text
    • http://www.thebeautifultrail.com/uploads/1/3/0/5/130588478/kujamemutonitok-jejixowaxi.pdfIn PDF document text
    • http://bestestcasinos.com/uploads/1/3/0/5/130589399/nijolibevow.pdfIn PDF document text
    • http://946.bpmtc.com/uploads/1/3/0/9/130969701/130969701.html#rv+parks+in+apache+junction+arizonaIn PDF document text

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000386f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x386F 8716 bytes
SHA-256: 372cd449c3e36871f60010799b75b483a5ad0d28fcd0f2cbb3ee1cf05e6831e8

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