Malicious PDF — malware analysis report

Static analysis result for SHA-256 e131503083ee79a7…

MALICIOUS

PDF

46.2 KB Authoring application: Inkscape
MD5: db5978554a2fb42592550749cc7fe1f9 SHA-1: 305e1ddb98fa16f966ecbad31efc535687d1618f SHA-256: e131503083ee79a72f61df3353d798132ff8b07a07df43ba004e0d0594eb83a7
150 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple PDF files hosted on various domains, a common technique for SEO poisoning and phishing. The embedded URLs suggest a phishing attempt, likely to redirect users to malicious content. The ClamAV detection and ML classifier further support the malicious nature of this PDF.

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://zikabrazil.com/uploads/1/3/0/5/130543092/nuwom.pdf
    • http://neneliciouslingerie.com/uploads/1/3/0/4/130488243/2328567.pdf
    • http://kylaconner.com/uploads/1/3/0/2/130273899/temojezad_rasuwa.pdf
    • http://anime-stuff.com/uploads/1/3/0/4/130483117/zufogefuzirufu.pdf
    • http://lunaparkstudio.net/uploads/1/3/0/4/130476255/5328228.pdf
    • http://konstanzethomas.com/uploads/1/3/0/6/130621555/99a695c86b90.pdf
    • http://wellingtonyogawithpenina.com/uploads/1/3/0/3/130313786/toxuwog_pusarabimat_povalijisup_jevalubem.pdf
    • http://southbankcuaco.com/uploads/1/3/0/5/130539438/goxagabodofuxo-jofuxukava-mufuxamikuj-kuxoxifu.pdf
    • http://mikeintucson.com/uploads/1/3/0/5/130551282/130551282.html#chronic+achilles+tendonitis+running

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011f8.bin
cc60cd816c787120318a2a08b1cbc3563527bd87ffda3d147f46851b9ae36dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8 8244 bytes

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