Malicious PDF — malware analysis report

Static analysis result for SHA-256 e056d0cb78fb772e…

MALICIOUS

PDF

79.1 KB Created: 2021-03-31 00:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f33c25b98b842c69bc72b455300408a0 SHA-1: 1400a9c9107650e13e5ab0b82440a6964325f5f6 SHA-256: e056d0cb78fb772ed7ab9767312440c3a060d951ea415f762c3f6469da5db4ad
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a large number of external links suggests a link farm or phishing attempt, directing users to potentially malicious sites like 'lozipotod.ru' and 'salebox.shop'. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious intent to redirect users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/strik?utm_term=5e+critical+hit
    • http://salebox.shop/75589195345b57tb.pdf
    • https://static.s123-cdn-static.com/uploads/4387706/normal_5ff4c8769e065.pdf
    • http://lovewaits.ru/97_honda_civic_automatic_transmission_fluid_capacityu1qgi.pdf
    • https://cdn-cms.f-static.net/uploads/4480897/normal_6043105c3c031.pdf
    • https://generixa.weebly.com/uploads/1/3/5/3/135350481/a10cbf7ab0.pdf
    • http://catsism.com/mobile_movies._com_2019bybhm.pdf
    • https://nakafafokebupop.weebly.com/uploads/1/3/1/4/131437029/bopekuwolesonalumofu.pdf
    • https://tivavazo.weebly.com/uploads/1/3/5/3/135337759/logula-wufotofa-vewubo-lunuzam.pdf
    • https://pidolanapeg.weebly.com/uploads/1/3/0/8/130813957/kifabovedanovimo.pdf
    • https://kirorasonosa.weebly.com/uploads/1/3/4/7/134743937/703501.pdf
    • http://wide-do.top/999732104107rgu9.pdf
    • http://instapriz.site/973359599045bj2q.pdf
    • https://sotevujek.weebly.com/uploads/1/3/4/0/134012487/08501.pdf
    • https://barutonujumajom.weebly.com/uploads/1/3/0/7/130739232/813941.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2f06d3db-1748-44fa-8455-5d25ebdc57dc/horngrens_financial__managerial_accounting_6th_edition_access_code.pdf
    • https://uploads.strikinglycdn.com/files/a89a85b6-8e53-4097-9872-1355f30b30bf/ranco_electronic_temperature_control_e1_error.pdf
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_8c5729aa82e94a1394027e82e491d674.pdf?index=true
    • https://uploads.strikinglycdn.com/files/632d4967-7bbd-44ed-8e05-cdd998badc22/sesalubovadafuvo.pdf
    • https://uploads.strikinglycdn.com/files/2feee30e-d4d3-4465-8696-595d458a65b0/how_to_remove_ice_maker_from_frigidaire_refrigerator.pdf
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_2e2c2f08f60049fcb10f52f1f4192832.pdf?index=true
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_c038c6295afb4e28ab3cd7b2f3568b7f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/685f6896-86d9-4cc8-b3ec-4f26ceb184c9/is_vocal_star_legit.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_off0000fa36.bin
7f814ba97c386ed18f6bce84790a85de1f22fe0c777496bf4e442e49dd4736ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA36 4736 bytes
font_01_sfnt_off00010a47.bin
f03e541951ea6a1876102f6bbb67a12e6edb6584950b05b35e15904387d4a01b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A47 10828 bytes

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