Malicious PDF — malware analysis report

Static analysis result for SHA-256 3974b3f59d9056cd…

MALICIOUS

PDF

36.7 KB Authoring application: Karbon
MD5: 7e495ad342ac2139574fbe29b5477bc1 SHA-1: 4738f6e209489930976ca0a91e3c1719730d4005 SHA-256: 3974b3f59d9056cd897be2d4c1ca8932d0d9665d0b9063a2897b04ca11624d6a
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body, though heavily obfuscated, contains text related to medical conditions, which could be a lure to disguise the malicious nature of the links. The primary attack pattern involves directing users to a network of external URLs.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://rachelcoburnsucks.com/uploads/1/3/0/5/130539403/5105253.pdf
    • http://masterrepairplumbing.org/uploads/1/3/0/8/130814286/kowevegefozu.pdf
    • http://utilitydealer.net/uploads/1/3/0/6/130639321/7141688.pdf
    • http://ready2startup.org/uploads/1/3/0/5/130539269/lizukuxinumu.pdf
    • http://campkennedy.com/uploads/1/3/0/5/130539738/tataveveri.pdf
    • http://transcendtext.com/uploads/1/3/0/2/130287934/841be2ecdf.pdf
    • http://decaturchorus.com/uploads/1/3/0/5/130545199/sitisiwujajenuzuwiw.pdf
    • http://animosante.net/uploads/1/3/0/6/130604088/gafikubagoris-dogosageguzaxa.pdf
    • http://mailinbackup1.pripojky.sk/uploads/1/3/0/3/130324289/patimozoronabo.pdf
    • http://livinggracedenver.org/uploads/1/3/0/8/130813448/vunese.pdf
    • http://mytgob.com/uploads/1/3/0/7/130775102/e07c92e.pdf
    • http://katie.zolotovdistributors.com/uploads/1/3/0/6/130604081/130604081.html#pathophysiology+of+thrombocytopenia+in+dengue+fever
    • http://mailinbackup1.pripojky.sk/uploads/1/3/0/3/1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a11.bin
eb47ca3edd039d2e3855c16dc6c11498195cf32ed8c5c047e5655c794d706e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A11 7384 bytes

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