Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fbfa9df603665f…

MALICIOUS

PDF

32.4 KB Authoring application: Smallpdf Desktop
MD5: 503283b5295d62056429942bb7c9fe02 SHA-1: 048b8d8d5878ed28893bcd8db4f26d44691c1190 SHA-256: c9fbfa9df603665f5b15b65eb98f63c898d33cd3fe849eeb3842d2de15f5f1f1
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 commonly used in SEO poisoning and phishing attacks to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. The document body contains a mix of seemingly unrelated text and the embedded URLs, suggesting a lure to encourage clicks on the malicious links.

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://paulfolger.net/uploads/1/3/0/3/130323199/317435.pdf
    • http://duckcreekgolf.com/uploads/1/3/0/5/130590143/2278921.pdf
    • http://quetpieschildrenboutique.com/uploads/1/3/0/3/130323449/zetopulawevegep_pizamizo.pdf
    • http://classichomeinspections.net/uploads/1/3/0/7/130740504/07a240276dca9.pdf
    • http://myartfairartists.com/uploads/1/3/0/7/130776015/tuzaxavonupa.pdf
    • http://guruinus.net/uploads/1/3/0/4/130491181/a1ce165.pdf
    • http://lapbandlosangeles.net/uploads/1/3/0/4/130476511/gejaj.pdf
    • http://ivflush.com/uploads/1/3/0/3/130313702/wudin_jodokizinuno_ketejowinu.pdf
    • http://christmaswishesbook.com/uploads/1/3/0/5/130539188/4b71e5fa.pdf
    • http://bspinportfolio.com/uploads/1/3/0/6/130621625/0bf7411.pdf
    • http://www.thefuntasticfoodjourney.com/uploads/1/3/0/7/130740232/xibul.pdf
    • http://newlifefitz.org/uploads/1/3/0/4/130476344/9961054.pdf
    • http://f4lmi.slpny.com/uploads/1/3/0/6/130620492/130620492.html#scarborough+fair+guitar+tab+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001cf6.bin
49f788b86a10cd8ca38d2778b71b5c6f4f56902709677905a781726a0fb3a4bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF6 7940 bytes

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