Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a66702a1ad876a…

MALICIOUS

PDF

35.6 KB Authoring application: pdf-parser
MD5: c1b37575d86bfc13f0215032b6835459 SHA-1: 68e43b8cc63095ef151b735f25ec9fe84c85e57b SHA-256: a2a66702a1ad876ac6b4609937655473376fd50a34cd716bcb918ae240b0f707
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or SEO-based distribution tactic. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely used to redirect users to malicious content or further stages of an attack.

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://broadbandaccess.org/uploads/1/3/0/2/130291575/koniwiv.pdf
    • http://redeemer.nyc/uploads/1/3/0/5/130552034/2742f4ae28a16.pdf
    • http://www.modernbeautyworld.com/uploads/1/3/0/7/130738499/4873808.pdf
    • http://tsunamiblueadventures.net/uploads/1/3/0/4/130483583/3025618.pdf
    • http://portfoliolaura.com/uploads/1/3/0/5/130539849/173019.pdf
    • http://www.romanalliance.com/uploads/1/3/0/6/130604935/fulizixejuvirofefid.pdf
    • http://www.pixldoc.com/uploads/1/3/0/7/130739196/rutasugaloxide.pdf
    • http://deluxefitnessatmygym.com/uploads/1/3/0/6/130620972/bisomejarad_vunomorerudiga_soruzowofobu_sedabefawek.pdf
    • http://mysticthisweek.com/uploads/1/3/0/5/130539016/944410.pdf
    • http://bergeroncdjr.com/uploads/1/3/0/5/130546434/tekovuz.pdf
    • http://mta-sts.backinactionchiropractic.com/uploads/1/3/0/5/130588497/1178273.pdf
    • http://backcountryvibes.com/uploads/1/3/0/6/130620659/711f89604bdc.pdf
    • http://parkroyalmhc.com/uploads/1/3/0/5/130547515/f5264c699d663.pdf
    • http://cohesivecode.org/uploads/1/3/0/5/130542977/rokitup_fojakulafeso_biwopelujizi_minavidosige.pdf
    • http://ajgittnerprocessequipment.com/uploads/1/3/0/6/130621164/05f39d.pdf
    • http://web4.pleasingfood.com/uploads/1/3/0/7/130775819/130775819.html#english+vocabulary+clothes+and+accessories

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306a.bin
b6329cd855dc5987d33f103846648d37eb4ac5660e9c625a2ff3510f05af8d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x306A 7800 bytes

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