Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7fdb42e395ad9f0…

MALICIOUS

PDF

35.5 KB Authoring application: pstoedit
MD5: 36c1a31da42e1f21026a1cfe5a0c4a97 SHA-1: 83118d1a8070892c7571d0b6bfd6fa56b339b51c SHA-256: a7fdb42e395ad9f0aacb5739ed84a07a7e5f5baae46ac752e6de34afc5559e1b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or distribution network. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://reasonvotes.com/uploads/1/3/0/4/130476574/bediwinakanile-vufivakaru.pdf
    • http://internalalignment.net/uploads/1/3/0/5/130590671/4395617.pdf
    • http://withwhitandgraceblog.com/uploads/1/3/0/6/130620996/buwesonividigel.pdf
    • http://wasatchdiaperbank.com/uploads/1/3/0/4/130478551/zojatewabiraxajonoso.pdf
    • http://99-podarok.site/uploads/1/3/0/8/130874099/zowuzuvufowov.pdf
    • http://treeservicechulavista.com/uploads/1/3/0/5/130588780/kunena_bevuvo.pdf
    • http://mojohomeautomation.com/uploads/1/3/0/7/130775071/sovafaginowi.pdf
    • http://hotelindustrymagazine.com/uploads/1/3/0/5/130551051/c1bb4537da43d6.pdf
    • http://thecbdbeauty.shop/uploads/1/3/0/5/130544687/mobirudonudutil-fuzexokin.pdf
    • http://turse.com/uploads/1/3/0/4/130476068/90432fe08eec.pdf
    • http://scribejar.com/uploads/1/3/0/5/130539295/5930349.pdf
    • http://adenta.bg/uploads/1/3/0/7/130776492/kugiwizisuteru-mivov-nozemebor.pdf
    • http://whosrunningamerica.net/uploads/1/3/0/2/130287548/6892825.pdf
    • http://hidingspace.online/uploads/1/3/0/2/130289754/sanewosorudadam.pdf
    • http://streamacoach.com/uploads/1/3/0/5/130539449/95852ae3e0c.pdf
    • http://leadershipcv.net/uploads/1/3/0/4/130477394/wozukovumosafene.pdf
    • http://studiocitynorth.com/uploads/1/3/0/7/130738777/d8741528a8d1.pdf
    • http://a1412531xstreamtravel.xsideas.com/uploads/1/3/0/5/130588419/130588419.html#binomial+probability+distribution+function+matlab

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d85.bin
34ab9b4bf227812a126bd5e2f27b10aa1bfe613ffcedce6105f20eb728eae93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D85 8016 bytes

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