Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07f39d46c0b0101…

MALICIOUS

PDF

98.6 KB Created: 2021-05-21 00:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 419a0f46c9ec02f3aa6935be3a22e869 SHA-1: 9ffa7ffb857b4896f4519e2a842bad9fa7b43de6 SHA-256: c07f39d46c0b0101513f94a3b9ea553eaeed1ecf06bc28c01fbf7c2c7ea05475
194 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malware distribution lure. It contains a large number of external links hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download' lure further supports this, and ClamAV detection confirms its malicious nature. The embedded URLs and link farm structure indicate an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • 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 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/strik?utm_term=d+name+love+whatsapp+status+video+download+mirchi PDF link annotation
    • https://guxemufisi.weebly.com/uploads/1/3/2/7/132710659/1960840.pdfIn PDF document text
    • https://zoxukumej.weebly.com/uploads/1/3/4/3/134327216/efe4faad.pdfIn PDF document text
    • https://wufipalowev.weebly.com/uploads/1/3/4/5/134595621/a8551025201d2.pdfIn PDF document text
    • https://kizuwapeputatu.weebly.com/uploads/1/3/4/3/134375201/digakezeposuzit-kegukiwip-tutifunogomedi.pdfIn PDF document text
    • https://pefibiwurabamiz.weebly.com/uploads/1/3/0/8/130874510/ab8e0b4fd56bb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491173/normal_6009a45e1f6f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475989/normal_603d2cde81111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_601ef0ef6a54e.pdfIn PDF document text
    • https://donikigegetala.weebly.com/uploads/1/3/4/3/134311768/selidusawolupunewe.pdfIn PDF document text
    • https://posajegodat.weebly.com/uploads/1/3/4/4/134477503/jorofuzukaxuj.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/33f8f0.pdfIn PDF document text
    • https://retedavaliloxi.weebly.com/uploads/1/3/5/3/135393755/wajaxamuvifufukasege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_606435f799aa1.pdfIn PDF document text
    • https://penuwoguf.weebly.com/uploads/1/3/6/0/136056634/d19b0e9.pdfIn PDF document text
    • https://tipureroxagojox.weebly.com/uploads/1/3/6/0/136096040/kudefakunewi_gafugo_vibiraxokopo.pdfIn PDF document text
    • https://biteganeger.weebly.com/uploads/1/3/4/3/134369481/1874194.pdfIn PDF document text
    • https://nidetufuw.weebly.com/uploads/1/3/6/0/136097009/1128934.pdfIn PDF document text
    • https://sifirugosiwoxam.weebly.com/uploads/1/3/1/3/131384024/nutenivonejejoxidok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412599/normal_5ff3c5c2a80de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/08fc1ce4-c961-4fd0-bbf0-2299478dfc42/chancellor_williams_the_destruction_of_black_civilization.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd97936-c4d7-4906-a7fc-69a43b8a14d4/who_are_marginalized_communities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64291b67-1ef5-461b-a5d2-33e6015f8aad/scientific_method_worksheet_6th_grade.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B9 5464 bytes
SHA-256: c248b8670f410ffed7c8bb05ede35695b0523dab5040edd4185cd603e6047d22
font_01_sfnt_off00013831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13831 2044 bytes
SHA-256: 9812099c5b295b859b411b79c63ef0f3e15cad7fffbe3efb0a8bc6b6c1165317
font_02_sfnt_off0001419e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1419E 11040 bytes
SHA-256: 191a14026ff890a53eba0c24f1ff9a3b224a8ebba6546ca8ec9879b8fa50eea7
font_03_sfnt_off00016763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16763 16060 bytes
SHA-256: bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d

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