Malicious PDF — malware analysis report

Static analysis result for SHA-256 16be5429c49af9c9…

MALICIOUS

PDF

35.9 KB Authoring application: Serif PagePlus
MD5: c7c12851797d926f843f0674fff79770 SHA-1: d4413226d108e5b099c51facd6d96fe2cdc7e151 SHA-256: 16be5429c49af9c99f675795d7bb3487d6be4cad8119745d94484c0ebddd1f6f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous URLs suggests a downloader or redirection mechanism.

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://electchestermanagement.com/uploads/1/3/0/7/130740462/7979574.pdf
    • http://lanternpartners.net/uploads/1/3/0/6/130604904/551d6dc2bd.pdf
    • http://midtownatlantachiropractor.net/uploads/1/3/0/6/130639249/gagigutuwiv.pdf
    • http://cambridge-cigars.co.uk/uploads/1/3/0/8/130814921/927a1d7b006487.pdf
    • http://fepev.com/uploads/1/3/0/4/130488157/5893600.pdf
    • http://mywhiteengineering.com/uploads/1/3/0/4/130435751/4159698.pdf
    • http://journeytofuntravel.com/uploads/1/3/0/3/130313468/ca87a.pdf
    • http://www.extremeexcavations.com/uploads/1/3/0/4/130477533/teboda_vojosikafi_kizaraze.pdf
    • http://keyidubodeqipaiyouxi.f18.ebkf.org/uploads/1/3/0/6/130640029/pesomidatedu_bonabuzu_jikil.pdf
    • http://caravanleisureni.com/uploads/1/3/0/2/130271090/zejibiniros_jonutufitutej.pdf
    • http://bet365youhui.br3h.com/uploads/1/3/0/4/130488181/130488181.html#java+basic+tutorials+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034a2.bin
434a14f051eeb06720272dbc38556509307ec3f4c410c283b710ccc074f460c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34A2 8428 bytes

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