Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34a9a02bb60cdc0…

MALICIOUS

PDF

32.6 KB Authoring application: QPDF
MD5: 3c9a8295f9436c7d0d7cfc5f40f4c02f SHA-1: a893088695f1edc4f8c3a5a82122314f474ebcee SHA-256: b34a9a02bb60cdc00f4b336feda23454b4e261ce8a7f6eb1bd2b59b2893df2cb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, disguised as a bank statement notification. This technique is commonly used for SEO poisoning or to distribute further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and malicious download intent. The embedded URLs are the primary IOCs for this attack.

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://bearvsbaby.org/uploads/1/3/0/5/130551795/nepaxosewubasovo.pdf
    • http://mycorporatecounselor.com/uploads/1/3/0/6/130620840/gezebamaxezutuzasudi.pdf
    • http://gibbstx.com/uploads/1/3/0/5/130551880/lamibafinizem_dinexifuxepot_zizolodokiv_xarilif.pdf
    • http://christidelnagro.com/uploads/1/3/0/8/130814340/78c1a338b39.pdf
    • http://yufeihsu.com/uploads/1/3/0/7/130740385/rigaf-lusilegefibed-kixop-liwani.pdf
    • http://wrsni.com/uploads/1/3/0/5/130589354/xolumowifapufox.pdf
    • http://gemalchemist.com/uploads/1/3/0/5/130539366/e19f11ae3f3.pdf
    • http://musicalmonday.org/uploads/1/3/0/7/130776316/e1b65ba7e0c.pdf
    • http://myartisfashion.com/uploads/1/3/0/4/130476322/suwapebidogosa.pdf
    • http://minneapolishope.com/uploads/1/3/0/4/130435726/limoriz.pdf
    • http://rodeonympho.com/uploads/1/3/0/7/130776827/6753d089.pdf
    • http://burgangt.com/uploads/1/3/0/7/130740623/8303950.pdf
    • http://maeganprovan.com/uploads/1/3/0/4/130476119/130476119.html#axis+bank+forex+card+statement+online

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027b0.bin
0ecfb3106506ed8aa58775f9dcf1a18cf840473e495b017b7ab25ddd52120247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B0 7796 bytes

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