Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac390847ae0ba75a…

MALICIOUS

PDF

31.6 KB Authoring application: QPDF
MD5: 592ac02bd19855a0909c6d4ee4068543 SHA-1: 1e39b7ad2c81611c29f200ca911fc05e79995ee6 SHA-256: ac390847ae0ba75abec9e227506a54dcb8c6d145bcdc972cb4b4bb424da7be12
120 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, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body content is heavily obfuscated and appears to be corrupted, preventing a clear understanding of its specific lure.

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://humbergeneralstore.com/uploads/1/3/0/4/130491932/896188.pdf
    • http://elevateyourdata.com/uploads/1/3/0/7/130776449/1b5e40418.pdf
    • http://mail.heightsfloraldesigns.com/uploads/1/3/0/4/130436020/gudumuzidaz_nenuteju.pdf
    • http://diymaniacs.com/uploads/1/3/0/6/130620154/6166145.pdf
    • http://crafteroffun.com/uploads/1/3/0/5/130543837/ragarokiw-keviroserep-banigujisew.pdf
    • http://www.lorahakanson.com/uploads/1/3/0/6/130639701/4636113.pdf
    • http://www.musiciansnutrition.com/uploads/1/3/0/3/130379087/8720337.pdf
    • http://autodiscover.wonderstonefilms.com/uploads/1/3/0/3/130313729/bubutakus.pdf
    • http://amashengebusinessholdings.co.za/uploads/1/3/0/8/130814133/7516211.pdf
    • http://anjaliseries.com/uploads/1/3/0/6/130605341/vizopi.pdf
    • http://adsl-63-204-18-20.benefitplans.org/uploads/1/3/0/6/130604749/130604749.html#factoring+trinomial+squares+with+leading+coefficient+of+1+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002871.bin
56ac562c9078bcff86ea8c26a0b25c46af3d3f3a10e526277ec6aa9ff8b1e53a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2871 6700 bytes