Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be1f2a376feb663…

MALICIOUS

PDF

40.2 KB Authoring application: PDFBox
MD5: 583a5ea229da0a36252c63b187fd6e8e SHA-1: cd12adf195a56045cc8263558b18e8a0396ebc96 SHA-256: 3be1f2a376feb663b7b6e86e747837b81f59be6e50ec3370be8978ffb1299c26
120 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. Static analysis revealed a large number of embedded external links, indicating a link farm designed to redirect users. The primary heuristic 'PDF_SEO_LINK_FARM' confirms this, highlighting the dominant host 'febixakudonotu.weebly.com' and the presence of 28 generated SEO PDF links. The document body itself is heavily obfuscated and contains technical PDF structures rather than user-readable content, reinforcing the malicious intent of the link farm.

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 https://febixakudonotu.weebly.com/uploads/1/3/0/4/130476652/3077189.pdf
    • https://wixuwiloxe.weebly.com/uploads/1/3/0/2/130289294/tatoxojukuxaroti.pdf
    • http://pqlpottery.com/uploads/1/3/0/6/130639868/noden.pdf
    • http://casashark.com/uploads/1/3/0/5/130540176/8574251.pdf
    • http://hudeemklety.ru/uploads/2020/01/28/40b97.pdf
    • http://mindfuldemocracy.com/uploads/1/3/0/6/130639400/1167068.pdf
    • http://mobileoct.com/uploads/1/3/0/5/130589165/d4ca2489dc.pdf
    • http://gnfi.com/uploads/1/3/0/4/130490151/bunixononopip-tumigaropugid-tavakomedovot-salegi.pdf
    • http://freesellerclasses.com/uploads/1/3/0/5/130590282/9dd1a.pdf
    • http://mermaidexplorers.com/uploads/1/3/0/2/130272283/6002100.pdf
    • http://newmillerdam.org/uploads/1/3/0/5/130590243/gunuzugipa_bogid.pdf
    • http://phoenixrunners.weebly.com/uploads/1/3/0/2/130288684/nulojewig-tarex-zuxiwajip-kepuvisejomane.pdf
    • http://riverhaircompany.com/uploads/1/3/0/4/130488282/246797.pdf
    • http://shilor.com/uploads/1/3/0/6/130639272/c962bc73f5.pdf
    • http://kylaconner.com/uploads/1/3/0/5/130550654/130550654.html#que+es+forma+en+arquitectura+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000140b.bin
14ec57e14bbd936b5d6bdc815f53b1169ac8b21b35d86983a79ee0cd280879ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140B 9356 bytes

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