Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d307915b00da31…

MALICIOUS

PDF

83.8 KB Created: 2021-02-26 10:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1fbd5185fa090ac699c1f652e1d7d302 SHA-1: 105d7ac9337f9483be92694c933f5c4a1bf5dc45 SHA-256: 93d307915b00da312af46781b4ed713516afb4f202fe953479eb81eafeb7f634
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, and contains multiple external URIs. One URI, https://mezovuduw.ru/wix?keyword=dewalt+dxpw4035+owners+manual, is embedded within the document's content, suggesting a phishing lure. The document's structure and embedded links indicate it is designed to redirect users to potentially malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=dewalt+dxpw4035+owners+manual PDF link annotation
    • http://bumumapa.mypressonline.com/limewawixebivi.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/jclODMq/air_force_reserve_special_warfare_officer.pdfIn PDF document text
    • https://cdn.sqhk.co/sabeludejem/swMrjjY/godaxuwotavikuxud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_602c2bee172b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403817/normal_5ff08d7e1c43e.pdfIn PDF document text
    • http://fewekikozora.22web.org/92477664268.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/e81ehgi/the_time_traveler_s_wife_trailer_legendado.pdfIn PDF document text
    • https://cdn.sqhk.co/nexasolonit/iigfhhC/sixilikuk.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/42486041635.pdfIn PDF document text
    • http://philonio.online/optimum_channel_guide_edison_njlln04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_5fd091974ad76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5fd8e6fbec859.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/38185847835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/tp_link_tl_wr841n_bd_price.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/79142862266.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/jurewebafuri.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001094c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094C 5780 bytes
SHA-256: 9c647735dbb1c9d5deb56abbc6d3f5b67b2c8e39fdb218a48166e4953126cccf
font_01_sfnt_off00011d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0D 10996 bytes
SHA-256: 996b30ecc1c953ba7bef3fd0763ac7706c3d2c602cb693ae634292b8f5e7c1f2

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