Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b97deb7579b7b0…

MALICIOUS

PDF

38.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 31331d61fbb5aacce93894ccb4f9ebe8 SHA-1: c53a4a1219879d5d812f2731d22db17400bcf3a6 SHA-256: b4b97deb7579b7b0bdaf6add1c2cbe6b02c6ab082ed979578158a6c733839ad7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO manipulation campaign. The ML classifier and ClamAV detection further support the malicious nature of the file. No scripts were extracted from this sample.

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://clickclackfitness.com/uploads/1/3/0/4/130483508/gelafi.pdf
    • http://lorilearnardart.com/uploads/1/3/0/4/130488251/653936.pdf
    • http://noahsgiftsandgallery.com/uploads/1/3/0/6/130604715/rolukaguzerud_vinazuzufa_garepop_mezusuxeveriwod.pdf
    • http://kolorpaints.com/uploads/1/3/0/7/130739470/juninaje.pdf
    • http://icantfocus.net/uploads/1/3/0/3/130324350/zogabowidetized.pdf
    • http://crosswordnerd.com/uploads/1/3/0/6/130604067/1033989.pdf
    • http://uicasda.net/uploads/1/3/0/4/130483331/fogov.pdf
    • http://millyproducts.com/uploads/1/3/0/5/130543979/fadewexodiwum.pdf
    • http://cds-ma.net/uploads/1/3/0/4/130492038/1961b47f22f51.pdf
    • http://lawtonfirstnaz.com/uploads/1/3/0/3/130379821/d27a0066d39.pdf
    • http://txinvite.com/uploads/1/3/0/4/130491001/wekufoxe.pdf
    • http://wehealhealthcare.com/uploads/1/3/0/4/130435624/4746544.pdf
    • http://beyondlimitlesspossibilities.com/uploads/1/3/0/5/130541133/sapitewu_nesopod_fuzisoguzow.pdf
    • http://bb-lash.com/uploads/1/3/0/5/130588403/5768388.pdf
    • http://nicolekruzel.com/uploads/1/3/0/6/130640095/makasoziragi.pdf
    • http://hauntedpaintball.com/uploads/1/3/0/7/130738972/xopujuzakosobili.pdf
    • http://konstanzethomas.com/uploads/1/3/0/7/130738727/4e47d9e524897.pdf
    • http://ajhollowayministries.com/uploads/1/3/0/4/130477048/7245330.pdf
    • http://memartopla.site/uploads/1/3/0/5/130590374/130590374.html#plantar+fascia+strengthening+exercises
    • http://clickclackfitness.com/uploads/1/3/0

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000373f.bin
51ec56937007194660382e44f4eb4dfeebe876841df1477599b79b025ab05fc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x373F 8196 bytes

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