Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ce72b0849fc146…

MALICIOUS

PDF

35.3 KB Authoring application: Soda PDF
MD5: bc487736fdd07cb3d51935d66846fef0 SHA-1: ef6fad38be20b6cc19b7a199b2abfb49ff4641f3 SHA-256: 12ce72b0849fc146e70ca8fc76c06e1e459e3547468f00f6069d7f64d416c902
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a mass external link farm with 22 URLs pointing to other PDF files hosted on various domains. This behavior is indicative of SEO manipulation or a distribution mechanism for further malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://notein-between.com/uploads/1/3/0/6/130603968/jixuxep.pdf
    • https://narojeli.weebly.com/uploads/1/3/0/6/130603945/1953740.pdf
    • https://luzisepig.weebly.com/uploads/1/3/0/2/130272385/dff584f2b.pdf
    • https://gatixezojevusox.weebly.com/uploads/1/3/0/5/130541623/soxeripo.pdf
    • http://cucinadisole.fr/uploads/1/3/0/4/130490117/nubenutep.pdf
    • http://squigeydesign.com/uploads/1/3/0/4/130489143/jegasix_difojane_bukejokosax.pdf
    • http://sugarmommascookieco.com/uploads/1/3/0/2/130272095/feboliseveperan.pdf
    • http://tepobuk.amazon-sellers-check.com/uploads/2020/01/29/4697725.pdf
    • http://rosshousemuseum.ca/uploads/1/3/0/6/130605168/9927049.pdf
    • http://mkayinthemountains.com/uploads/1/3/0/4/130436337/73e225c.pdf
    • http://preschoolhouse.com/uploads/1/3/0/6/130605059/b9e6aa03.pdf
    • http://rebeccalaplacaattia.com/uploads/1/3/0/3/130323573/130323573.html#scatter+plots+and+association+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001288.bin
735c906658ac04e5db82e18603574b6a68d67b6a7f0a04feb3b7d334c3d80522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1288 7872 bytes

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