Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd2e2ff38752819…

MALICIOUS

PDF

30.6 KB Authoring application: pstoedit
MD5: 7ce33f8ba0d38c4d68e11b0dac8ace5b SHA-1: 0470e4cf3a21c95d461772749e383a80121f0ce9 SHA-256: 6bd2e2ff38752819a1aad088ec4e8697631d88bf1193836916306419c8be56ca
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to host phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://realfamilycamping.com/uploads/1/3/0/5/130589191/rurobusuzotuzarel.pdf
    • http://westcoastpawstransport.com/uploads/1/3/0/2/130274371/poxulobenakizadu.pdf
    • http://www.ecuriebarnton.com/uploads/1/3/0/4/130494059/4875294.pdf
    • http://trainingcenterchurch.org/uploads/1/3/0/2/130288626/mumowuji.pdf
    • http://scenicsalem.com/uploads/1/3/0/6/130621098/466600fd4704.pdf
    • http://mail.art4eternity.com/uploads/1/3/0/4/130488590/kajusinepinabawaki.pdf
    • http://advertisingsa.com/uploads/1/3/0/5/130540240/2855397.pdf
    • http://smallwar.studio/uploads/1/3/0/5/130551126/sojosujokotom_tedevi_voriredika_nevirawofu.pdf
    • http://newlifestylesnepelenaferraretto.com/uploads/1/3/0/3/130313345/pogewa.pdf
    • http://morrowworldpost.com/uploads/1/3/0/4/130478203/fuwuxutipiwevizis.pdf
    • http://moorelaughing.com/uploads/1/3/0/3/130323437/533870.pdf
    • http://wcd-up6fh3vz.mgh-r.ch/uploads/1/3/0/6/130621758/130621758.html#longman+english+grammar+practice

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000020a8.bin
12c0a86280ae323d7aa52bec2e88ff78de5a0a840b4952ee64740168ca11532a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20A8 7708 bytes

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