Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c668495bec0b631…

MALICIOUS

PDF

38.0 KB Authoring application: Adobe PDF Library 9.0
MD5: 87e91823b18ff90a6d0f3aa0c0fc4f09 SHA-1: 67e62b128194006e44b49584a2a1ab19a94d5577 SHA-256: 0c668495bec0b6312db71163e2553cb99eda9aef90441b4bb4a55d66ed9e0d20
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically flagging it as a phishing or potentially harmful PDF. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond link distribution.

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://www.speaktruthsda.com/uploads/1/3/0/2/130291996/gujezew.pdf
    • http://mokka.app/uploads/1/3/0/6/130639775/wowiju.pdf
    • http://cdconggiaovietnamvic.org/uploads/1/3/0/3/130379575/0f0de3.pdf
    • http://vinnybell.com/uploads/1/3/0/4/130478868/jadodakurafav_ruluvelewuju_bilud.pdf
    • http://decaturchorus.com/uploads/1/3/0/7/130776164/gisijotazot-pimironivoso.pdf
    • http://wheredoyouwanttogoforlunch.com/uploads/1/3/0/7/130738511/tudimokeziruwa-bifawemezepasi.pdf
    • http://nealybirthandlactation.com/uploads/1/3/0/2/130287538/gewujipura.pdf
    • http://brandielizabethlocke.com/uploads/1/3/0/4/130475979/b43f625af9b.pdf
    • http://obxaerialads.com/uploads/1/3/0/6/130604694/dexivo.pdf
    • http://mishpuchacards.com/uploads/1/3/0/4/130435805/e706492.pdf
    • http://omahamassagecoupons.com/uploads/1/3/0/7/130775228/7387855.pdf
    • http://drpatty.net/uploads/1/3/0/4/130435766/6266092.pdf
    • http://whatdoyousee.art/uploads/1/3/0/3/130312986/47c62c3b.pdf
    • http://www.21stcenturyfertility.org/uploads/1/3/0/6/130604658/8d941918b8c5.pdf
    • http://www.nova-hall.com/uploads/1/3/0/3/130379133/gibomot_beniposupa.pdf
    • http://8n7.brdge.org/uploads/1/3/0/6/130604372/130604372.html#the+umbrella+academy+comic+ending

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039e0.bin
68ada956cdbb1a8b4447f21e806687e56ab11d2ec98445d4e3aa601918174743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39E0 8064 bytes

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