Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c21497a6067f562…

MALICIOUS

PDF

74.6 KB Created: 2021-03-21 04:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96cae9763f94fc57743a638fd8d58552 SHA-1: d10d7a8d96919aef123b8d210201a3864640a78d SHA-256: 2c21497a6067f5620d68096ab34b2e049ab462818d7b6a40774e0f2c9841519c
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The document body, though truncated, appears to be a lure related to "Urban outfitters size guide pants", likely intended to trick users into clicking malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://zajinet.ru/wix?keyword=urban+outfitters+size+guide+pants
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5fcbd8960591b.pdf
    • http://tumexade.22web.org/48545700715.pdf
    • https://gipimosikiji.weebly.com/uploads/1/3/5/9/135963651/bijemati-tetovurirugugu-serarafifime.pdf
    • https://tizezesi.weebly.com/uploads/1/3/4/0/134041120/pamaxog-jetigiwu.pdf
    • https://cdn-cms.f-static.net/uploads/4483081/normal_60330c799a5af.pdf
    • https://static.s123-cdn-static.com/uploads/4366676/normal_6005050a49a38.pdf
    • https://cdn-cms.f-static.net/uploads/4498330/normal_604160544f7d5.pdf
    • http://dutarotanazosuv.medianewsonline.com/94678470011.pdf
    • https://static.s123-cdn-static.com/uploads/4453334/normal_60094856cc390.pdf
    • http://megiloreb.mypressonline.com/86532812053.pdf
    • http://lojapidabud.mypressonline.com/how_to_put_together_prince_lionheart_wipe_warmer.pdf
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/cc5f2c02fb.pdf
    • http://bamefidev.mygamesonline.org/mapa_de_africa_sin_nombres_para_imprimir.pdf
    • http://bovibuvebus.getenjoyment.net/73972976201.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a8a2d6b8-6248-42a0-90a4-e25e421c2e59.filesusr.com/ugd/f63f29_8ba5e4b2be4245be9faadeba25f54807.pdf?index=true
    • http://jimomurapujivo.onlinewebshop.net/78635821008.pdf
    • http://dululelafekupas.rf.gd/42611530997.pdf
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_0bff7cf235704464acd46028cc944b3b.pdf?index=true
    • http://raxajabidadida.onlinewebshop.net/sadogufepejilokuza.pdf
    • http://rukosivujuxu.atwebpages.com/sewenironudenigoz.pdf
    • https://9d349da1-218b-4b59-9e37-2a90cab56d40.filesusr.com/ugd/de9003_42f4fcf2f85a435eb8e2c03538e65a3d.pdf?index=true
    • http://kexafobe.rf.gd/pretty_format_json_sublime.pdf
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d4.bin
367c740619bcd38e9480ea164ff235a6069e8726d3bdc67b1dee053953d1d40a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D4 5356 bytes
font_01_sfnt_off0000f420.bin
7fb646c0096f0075af61c676827a485440cafdbec6d1a4fdd7975c8ce71658e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF420 11584 bytes

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