Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c011aaf544c0c00…

MALICIOUS

PDF

46.2 KB Authoring application: Karbon
MD5: 6b99cfc4a65e186b2b70f7bec8126e1a SHA-1: 78308f76fa7e5e24ab38c2c9365f31758bcafe12 SHA-256: 4c011aaf544c0c006d85c5e3301efc2a13c8492e81b80bb5e1f4cf4101dc7d9e
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 links to external PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, as flagged by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection further supports its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely used to distribute phishing content or redirect users to malicious sites.

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://scylax.org/uploads/1/3/0/4/130476263/lozabipulofek.pdf
    • http://warpigs-mc.com/uploads/1/3/0/8/130874322/zejadotesij.pdf
    • http://broadweekendmba.com/uploads/1/3/0/6/130620327/jalezojitukarew.pdf
    • http://trainerblueprint.com/uploads/1/3/0/7/130776358/domimov.pdf
    • http://mrsyatesclass.com/uploads/1/3/0/2/130289226/digiw.pdf
    • http://www.fallforfranklin.org/uploads/1/3/0/8/130813401/0703b83.pdf
    • http://mazuz.net/uploads/1/3/0/5/130541272/1e702738e191.pdf
    • http://whitecrowadventuretours.com/uploads/1/3/0/6/130621607/sawudonubenexen-viwelexefojix.pdf
    • http://yachtrock.biz/uploads/1/3/0/4/130483656/xufaxim.pdf
    • http://rimavop.store/uploads/1/3/0/7/130776150/36c3370dbd0f.pdf
    • http://musicdepotrocks.com/uploads/1/3/0/5/130540472/f8e05c81b57.pdf
    • http://emilydowlingfriedman.com/uploads/1/3/0/2/130292089/wexugagatomasifim.pdf
    • http://mountainfestival.org/uploads/1/3/0/7/130775921/9949219.pdf
    • http://www.panoramicgalaxy.com/uploads/1/3/0/4/130488820/bofemiwebuzaj.pdf
    • http://bmn4pwxv.brdge.org/uploads/1/3/0/8/130874134/130874134.html#mnemonic+for+2nd+line+tb+drugs

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c99.bin
d539fb4ac9a8900dd021b423a71e6ff87e321f5162b6607e46202a1db4a2af4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C99 2944 bytes
font_01_sfnt_off000059cd.bin
965ed1422f410bd53cb1ebd4394bf2adbfcc61e812eaf41abdc0b445ff1c4438		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CD 8560 bytes

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