Malicious PDF — malware analysis report

Static analysis result for SHA-256 1926f2ed9c5e04be…

MALICIOUS

PDF

36.2 KB Authoring application: Soda PDF
MD5: 1d1981eb5c15902ec801523916ff90c1 SHA-1: 2508cf8448460c68c0b487b80e44187c35591e73 SHA-256: 1926f2ed9c5e04bed157de69319d10b09bba06599d1efe42f234e8c762323e2e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to host malicious payloads. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though partially obfuscated, contains URLs that are likely part of this link farm, suggesting the primary goal is to redirect users to download further malicious content.

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 https://witasumezuwodon.weebly.com/uploads/1/3/0/2/130287837/turulonezosila.pdf
    • http://spwhoa.com/uploads/1/3/0/5/130550971/7021198.pdf
    • http://xiwew.pweuxk.xyz/uploads/2020/01/27/818d64ac8fa.pdf
    • http://staffordchamberofcommerce.com/uploads/1/3/0/4/130476346/weminitiwa.pdf
    • http://realedchat.com/uploads/1/3/0/6/130603737/1950688.pdf
    • http://suv.jasonbarun.com/uploads/2020/01/28/3044017.pdf
    • http://cleaningstgeorge.com/uploads/1/3/0/2/130289479/328bab309.pdf
    • http://kol.candidaturaomarmolina.com/uploads/2020/01/27/205019d5778d9fb.pdf
    • http://michelleveixmccartan.com/uploads/1/3/0/5/130542907/8034933.pdf
    • http://my-bizco.com/uploads/1/3/0/2/130289284/witipufal_kulixatefan_togilesu.pdf
    • http://nursesnowinc.org/uploads/1/3/0/6/130622106/130622106.html#aio+er+app++uptodown

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123a.bin
73153f5b635a40db93d67851c482f003d468d107769487399ed82ac4215c9911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123A 8068 bytes

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