Malicious PDF — malware analysis report

Static analysis result for SHA-256 77bb9ced4261ae60…

MALICIOUS

PDF

37.5 KB Authoring application: Adobe PDF Library 9.0
MD5: 90c5de0e48d20eb122bfc1ca6576c213 SHA-1: d7312010fbc1dc51006a3826bdfbd597748946c6 SHA-256: 77bb9ced4261ae60615ea3b7485bc3d0f1987b53dea15db384a96c9454613bfe
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics, including a critical finding for a link farm containing numerous external PDF URLs. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing or redirector. The embedded URLs likely lead to further malicious content or phishing pages, aiming to trick users into downloading further payloads or submitting credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://doodletoyshop.com/uploads/1/3/0/7/130775690/24081fb744.pdf
    • http://weldamania.com/uploads/1/3/0/4/130483200/5711815.pdf
    • http://staffpicked.com/uploads/1/3/0/6/130604315/344393dee34f.pdf
    • http://legoutdulibre.org/uploads/1/3/0/6/130621024/bafawiwozogop.pdf
    • http://vreedy.shop/uploads/1/3/0/5/130550901/761b390e9e2656.pdf
    • http://e1shipperpro.com/uploads/1/3/0/3/130323765/9598281.pdf
    • http://ccevenice.com/uploads/1/3/0/7/130776601/9152563.pdf
    • http://myfruitsoflife.net/uploads/1/3/0/3/130323674/vopirelux_bejonatoropifu_lopodafip_temavaled.pdf
    • http://imaginecaredigitalhealth.net/uploads/1/3/0/7/130739124/6941637.pdf
    • http://firezoneschaumburg.com/uploads/1/3/0/4/130436282/bovizaf.pdf
    • http://cephproject.org/uploads/1/3/0/2/130272636/vekinagezo_jobifamuw_tesenujulogago_zutapidawifemep.pdf
    • http://advanceadvocacyandsupport.com/uploads/1/3/0/3/130379305/wuwovegobe.pdf
    • http://thatclassiccarshow.com/uploads/1/3/0/4/130476628/jiziposivuw_bubezinafowob_mupavagedasoto.pdf
    • http://homemodularsystems.com/uploads/1/3/0/5/130588266/nesuxinujanek.pdf
    • http://resourcesforthesoul.com/uploads/1/3/0/7/130739629/7506748.pdf
    • http://strengtheningfamiliesalaska.com/uploads/1/3/0/6/130639729/4fe7aaffe.pdf
    • http://allamericandogexpo.com/uploads/1/3/0/5/130551457/130551457.html#conversation+starters+for+english+learners

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003726.bin
fac0b3f4e20c94739eec0b77841e531589b74b691efd29235058dfd530c30a00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3726 7748 bytes

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