Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81a00bc14ad0dd4…

MALICIOUS

PDF

82.4 KB Authoring application: pstoedit
MD5: 81f080548285697ef0101b97f2927094 SHA-1: fa8ba126ee65e5bd963721697670c96154294e78 SHA-256: f81a00bc14ad0dd49841105f3e3e9add9091af94de1e51b56d530607f9766eb7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious intent. No scripts were extracted, and the document body contained mostly garbage data and URLs.

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://thoughtjotsmemobooks.com/uploads/1/3/0/6/130621459/risilurafutop-tajuroxigudejof-jerivexixagaga.pdf
    • http://keyautonj.com/uploads/1/3/0/4/130483376/8486901.pdf
    • http://strongholdequineequipment.com/uploads/1/3/0/2/130272361/tugefovirumiv.pdf
    • http://myveganstation.com/uploads/1/3/0/3/130323407/megofezusulevafu.pdf
    • http://albuquerquemobilenotary.com/uploads/1/3/0/2/130271072/suvepazejitiluwi.pdf
    • http://anopenproject.ca/uploads/1/3/0/4/130476237/1a54574a8f94b6.pdf
    • https://filevarosebili.weebly.com/uploads/1/3/0/5/130589427/9061803.pdf
    • http://agingathometech.com/uploads/1/3/0/6/130604671/mezilate.pdf
    • http://paulberryhillsgallery.studio/uploads/1/3/0/6/130621140/82fcd8c.pdf
    • http://decgallery.com/uploads/1/3/0/6/130621353/8369635.pdf
    • http://seiterforjudge.com/uploads/1/3/0/4/130483348/1997875.pdf
    • http://besodelsoltan.com/uploads/1/3/0/3/130379590/9832514.pdf
    • http://shardexplorers.com/uploads/1/3/0/5/130542907/130542907.html#sex+hot+brazil

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c6.bin
de512b8fa7a26564c0dfd22d9fa61d56fd6967024a3f75e6ed9b1b3df30bb089		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C6 9088 bytes

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