Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e97a52a75db3c1e…

MALICIOUS

PDF

51.0 KB Authoring application: Mobipocket Creator
MD5: 0ae152e06949e53cd1e01f18c53e5fc2 SHA-1: 2dbad5bc8720ace2b3c6c98c149d3e3dd25f136c SHA-256: 1e97a52a75db3c1eb8d47ea45f0a2f17cf65ba090eee96f009ffbcb60d0399fa
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution network designed to spread malicious content or manipulate search engine results. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution through these linked documents.

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://nelecreativegroup.com/uploads/1/3/0/6/130621359/8710740.pdf
    • http://chimyst.com/uploads/1/3/0/4/130483123/5e38e1a80c8cb6b.pdf
    • http://restaurantwaterloo.nl/uploads/1/3/0/2/130272903/guzawinefuxiz_vezurorakijofo_rifivegefobame.pdf
    • http://emilybbakes.com/uploads/1/3/0/4/130483155/jelisit.pdf
    • http://prideygirlpetcare.com/uploads/1/3/0/6/130604397/8563393.pdf
    • http://minneapolisangels.org/uploads/1/3/0/4/130435774/5187223.pdf
    • http://almostasecondgrader.com/uploads/1/3/0/6/130621035/1d515b.pdf
    • http://wazyshairsalon.com/uploads/1/3/0/4/130483963/zopofafijiwaz-mijixejabawe.pdf
    • http://dididothat.net/uploads/1/3/0/2/130272905/7954666.pdf
    • http://bloomandbeyond.com/uploads/1/3/0/4/130483781/narulalemeri-femefogajewexu-zowezel-selavado.pdf
    • http://kuteandkurvy.com/uploads/1/3/0/6/130604599/wofosale.pdf
    • http://justchryssbeauty.com/uploads/1/3/0/2/130270899/ec29a77e.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/5/130551824/130551824.html#yugioh+card+prices

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001378.bin
826a321113fe99f30a332100a589b8b2f128b1b4f73bc9fc144d05647c89a046		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1378 8608 bytes
font_01_sfnt_off000081a8.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A8 16068 bytes

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