Malicious PDF — malware analysis report

Static analysis result for SHA-256 49555a8d6b8c40d6…

MALICIOUS

PDF

36.4 KB Authoring application: GIMP
MD5: 46012fa56b2832e659f0290d2aa14492 SHA-1: 29b49fd9678b8df85487f1b1c88a1916408c1497 SHA-256: 49555a8d6b8c40d624d881f09719cab12732c9ac8e184e57e7bdbaf436465d0b
128 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded external links, a common technique for SEO poisoning and phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a malicious intent. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of linked PDFs suggests a drive-by download or redirection campaign. No scripts were extracted from this sample.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://coremedicalassociates.com/uploads/1/3/0/5/130540286/vigosegoronobevuza.pdf
    • http://verticalfitness100.com/uploads/1/3/0/4/130476910/xewag.pdf
    • http://mail2.corallinks.com/uploads/1/3/0/2/130272603/vejipuvav_wuvexuvumamuv_gupidoxe.pdf
    • http://www.thespinningshed.com/uploads/1/3/0/2/130272506/xotezazi-fetobukazu-boxusodowiz.pdf
    • http://cooltirewarehouse.com/uploads/1/3/0/3/130313015/lokasutu_janomegedime_kukil.pdf
    • http://www.mypartytime.info/uploads/1/3/0/9/130969944/3945753.pdf
    • http://nflar.club/uploads/1/3/0/4/130483539/7451218.pdf
    • http://planettammy.com/uploads/1/3/0/6/130621841/96056d163541.pdf
    • http://whirlwindlabs.co/uploads/1/3/0/2/130271145/358761.pdf
    • http://allthatglitters.london/uploads/1/3/0/5/130543575/8194264.pdf
    • http://www.pikecountytowing.com/uploads/1/3/0/5/130541065/xagibenuwogi.pdf
    • http://centralcoastlifecoaching.com/uploads/1/3/0/7/130775126/vupape_nelagob.pdf
    • http://74-123-77-253.mgwnet.com/uploads/1/3/0/3/130313605/130313605.html#pdf+editing+free+software+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003587.bin
4f26cc69e0ce19c9acc53e76a629a39eaa903f50b97ee70b3b3d642dd184d8be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3587 8252 bytes

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