Malicious PDF — malware analysis report

Static analysis result for SHA-256 771948ceb373a3d1…

MALICIOUS

PDF

37.3 KB Authoring application: GIMP
MD5: 0bc8338fbcc658f089a17baa7fbabe4f SHA-1: aa71ecba370d83fa00670d12008e73f474370e7f SHA-256: 771948ceb373a3d1a9498c09ac816c586a81ba7c13e5b45c24224ff8b03cf07f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious with high confidence. The document body is heavily obfuscated and unreadable, providing no further context on its specific intent beyond the URL 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://assentive.net/uploads/1/3/0/6/130621648/82b7a225973f.pdf
    • http://migromarine.com/uploads/1/3/0/5/130551387/1155814.pdf
    • http://natashabentley.co.uk/uploads/1/3/0/2/130287915/9086159.pdf
    • http://constructioninsurance.net/uploads/1/3/0/7/130775034/36de22.pdf
    • http://mytgob.com/uploads/1/3/0/2/130287938/dfbe3d4e64b.pdf
    • http://my-trg.com/uploads/1/3/0/4/130494478/0a2ea574.pdf
    • http://immanueljamestownnd.org/uploads/1/3/0/7/130739811/5215375.pdf
    • http://hiphopper.com/uploads/1/3/0/4/130435857/bugibo_romuzad_leniwes_guzizivase.pdf
    • http://congresoestetica.com/uploads/1/3/0/5/130590391/6780044.pdf
    • http://200jobs.com/uploads/1/3/0/4/130483912/kivat_vufogezowivaw_soderigumu.pdf
    • http://redskinscheerleaderalumni.com/uploads/1/3/0/5/130589401/d3b3a44.pdf
    • http://kyrafoster.com/uploads/1/3/0/5/130538931/1065784.pdf
    • http://elispinheirobellydance.com/uploads/1/3/0/4/130435990/rivivebugo.pdf
    • http://katrinaberesford.com/uploads/1/3/0/6/130621819/zijonurafu.pdf
    • http://webdisk.lansingnursery.org/uploads/1/3/0/8/130815058/kuketona.pdf
    • http://orenturner.com/uploads/1/3/0/2/130271250/8368540.pdf
    • http://wilsoninteriordesign.com/uploads/1/3/0/5/130590558/3682832.pdf
    • http://lostpupper.club/uploads/1/3/0/4/130483872/ninazilawaruz.pdf
    • http://naturalwellnessacupuncture.com/uploads/1/3/0/7/130775424/lavavaxiloduvisojomo.pdf
    • http://www.forest-time-glamping.com/uploads/1/3/0/6/130621713/4056714.pdf
    • http://renova-skin.com/uploads/1/3/0/3/130313159/xixoledax.pdf
    • http://host2.carmichaelnl.com/uploads/1/3/0/7/130739152/130739152.html#shooting+guard+drills

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032fa.bin
0f56c264006d4a8fc2f0acc24605d64cad117438e71041b99175b7d84603d60b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32FA 7428 bytes

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