Malicious PDF — malware analysis report

Static analysis result for SHA-256 e21592397fc45253…

MALICIOUS

PDF

36.7 KB Authoring application: Scribus
MD5: 6498f5ab24daf88f1981e5914368f612 SHA-1: a82cd3b848a548f56dd3b25e910a985b7f4c5846 SHA-256: e21592397fc452539a001262e43ae8d009ac10d9215ec6fbdeb48d8ad57c440f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body, though partially corrupted, mentions '5th grade math review packet with answers', suggesting a lure to disguise 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://treymoore.net/uploads/1/3/0/4/130488700/kujonoxu-wiseromiwejewuf-pigofak-wiwaji.pdf
    • http://clarinetrepairs.org/uploads/1/3/0/5/130539373/8803369.pdf
    • http://mayravaloski.com/uploads/1/3/0/2/130291555/jozajebuzife.pdf
    • http://redshiftparts.net/uploads/1/3/0/4/130435753/dasirenu.pdf
    • http://myshermer.net/uploads/1/3/0/6/130604720/bevunader-rijadinekimep.pdf
    • https://lerulevogoxeb.weebly.com/uploads/1/3/0/5/130551302/nixetinenigo.pdf
    • http://priorlakeselfstorage.com/uploads/1/3/0/2/130272352/7903e2cc75.pdf
    • http://mikealfieri.net/uploads/1/3/0/5/130589150/6572396.pdf
    • http://zilimotal.pnptogo.com/uploads/2020/01/28/d9dd4.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/7/130775752/130775752.html#5th+grade+math+review+packet+with+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125d.bin
1c9aa5432b333384823475a90002ccec624fe3b1c01f30e0476adef5440aeb00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125D 8532 bytes

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