Malicious PDF — malware analysis report

Static analysis result for SHA-256 74006ea9914df322…

MALICIOUS

PDF

80.6 KB Created: 2020-03-24 10:38:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5e9e3a4e5686cbcfa4afa1b896fdab2c SHA-1: 7931021b37c9c193720ec62d2a37874da531c039 SHA-256: 74006ea9914df322211608cb8487bac0a758518e832ac42726810429a4b4fce4
104 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to manipulate search engine results or distribute further malicious content. The document body text, though partially obfuscated, mentions 'Clash of civilizations book review pdf', likely a lure to disguise the malicious nature of the embedded links. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a high-risk document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://automotiv.org/uploads/1/3/0/4/130488228/130488228.html#clash+of+civilizations+book+review+pdf
    • http://omwroadside.com/uploads/1/3/0/8/130814104/4d100.pdf
    • http://cbcor.net/uploads/1/3/0/7/130740617/174764.pdf
    • http://proautocareers.com/uploads/1/3/0/2/130272592/2ac1f3f52c5ceb5.pdf
    • http://musicstockphoto.com/uploads/1/3/0/6/130604250/gasufu.pdf
    • http://imotiv.net/uploads/1/3/0/6/130621401/texerigomavim.pdf
    • http://desatascosbarcelona.net/uploads/1/3/0/8/130815080/vefunewuvugidonasa.pdf
    • http://workspaceridge.com/uploads/1/3/0/7/130738786/d37e30c54.pdf
    • http://exhibition-board-hire.com/uploads/1/3/0/4/130435583/jiludorug-xakibufisifog-kunuvi.pdf
    • http://host67.carmichaelnl.com/uploads/1/3/0/5/130539457/sanikuzexuluv.pdf
    • http://www.truckeephotoroom.com/uploads/1/3/0/2/130287929/buvegefupapugod.pdf
    • http://ljcleojamesconstructionllc.com/uploads/1/3/0/3/130379798/0c030c55fca4.pdf
    • http://www.saverioesara.com/uploads/1/3/0/6/130621664/gapiwirefud_judojobifuja.pdf
    • http://keplex.us/uploads/1/3/0/4/130476429/pozowagimawamo-jakemasumuw-nufunedexipojon-zorimugirop.pdf
    • http://double-a-printing.com/uploads/1/3/0/7/130776131/fidog_nuwekuver_wuwapajiz.pdf
    • http://www.idhabbo.org/uploads/1/3/0/7/130776141/8056686.pdf
    • http://alphaestateplanners.net/uploads/1/3/0/5/130551556/539369.pdf
    • http://bucksnortnrunclayworks.com/uploads/1/3/0/4/130475994/2998113.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e45c.bin
19d03356b8b58410909330f53d5d26034492ede7fea744940417fd1802800e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 10916 bytes
font_01_sfnt_off00010971.bin
b1d87bdd6df9be4bb81c2c23aba77fbaf8b34aa9618e53d50ec55bf9070e4c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10971 5836 bytes
font_02_sfnt_off00011ba9.bin
9a82b99de49bb2d597a969dbfd694eba919cf1a09614a1a10619c26b76c360a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA9 16460 bytes

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