Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c01a6e63bcee9f9…

MALICIOUS

PDF

37.5 KB Authoring application: Smallpdf Desktop
MD5: 9b540b78875ebebf2ecce3ff7833f534 SHA-1: 60ca4af1872097474df4f5b61a0be1ab26de223c SHA-256: 4c01a6e63bcee9f9efb1212e47b56e924ad1e90127e779643c9906ada1c65cf7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection for Pdf.Phishing.TtraffRobotInstall. The presence of a large number of external PDF links suggests a phishing or SEO manipulation campaign. The ML classifier also returned a high confidence score for maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://duilawvt.com/uploads/1/3/0/5/130588806/4623035db5435.pdf
    • http://meridenoilcompany.com/uploads/1/3/0/5/130539300/07bf180048fed5.pdf
    • http://folaj.shlyahovsky.pw/uploads/2020/01/29/3422449.pdf
    • http://hanselandgretelcottage.com/uploads/1/3/0/6/130603809/6080032.pdf
    • http://cheapredwine.net/uploads/1/3/0/7/130738739/1253374.pdf
    • http://exfdainspectors.com/uploads/1/3/0/8/130814104/3270188.pdf
    • http://ta65dealers.com/uploads/1/3/0/4/130483047/fuzoguzulalopuwi.pdf
    • http://stripperguy.com/uploads/1/3/0/5/130590339/kaxuvejibegefutozazu.pdf
    • http://sustainablesuburbancommunities.com/uploads/1/3/0/5/130540554/9932433.pdf
    • http://landofosllc.net/uploads/1/3/0/6/130603909/gujobimubunu.pdf
    • http://blockchainambassador.ca/uploads/1/3/0/5/130543538/130543538.html#skilled+nominated+%28subclass+190%29+visa+eligible+skills+list

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001250.bin
aa71e5d900f5bb9f91aa759b095d9f0eccdd5c41853706aed5da5be993c16ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1250 8064 bytes

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