Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c0ee662ebb5e42…

MALICIOUS

PDF

68.9 KB Created: 2021-05-07 20:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbb19c364d5eab97bab07e6246e131a7 SHA-1: ea6ef174174a7b7296dcb91dc7c999aee71af8c3 SHA-256: 15c0ee662ebb5e42d9e24307d63e7916b12423388a5a350dfe25f932761f4833
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results. The primary malicious URL identified is zajinet.ru, which is likely used to host or redirect to a phishing or malware distribution site. The document's structure and the presence of numerous links suggest an attempt to obfuscate the malicious intent and potentially distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/strik?utm_term=phb+finest+2020+download
    • https://cdn.sqhk.co/gobajejuz/3gh1whh/nofuvoxogobamisal.pdf
    • http://shoop-ff.ru/canon_eos_20d_price_philippines1ji1x.pdf
    • https://cdn.sqhk.co/vizefejij/OjaAZhc/microsoft_planner_and_project_management.pdf
    • https://cdn-cms.f-static.net/uploads/4409239/normal_5fd82c8437aae.pdf
    • http://small-italy.space/216916426249qmiy.pdf
    • https://cdn-cms.f-static.net/uploads/4448330/normal_5fd62b0eb0eff.pdf
    • https://cdn.sqhk.co/joxonorapa/igcgc4F/livobinetagupirinu.pdf
    • https://static.s123-cdn-static.com/uploads/4474736/normal_6008ea2603ac9.pdf
    • https://verebabivudasa.weebly.com/uploads/1/3/4/7/134771522/rokoxanut.pdf
    • https://lelobetiladafan.weebly.com/uploads/1/3/4/4/134497055/d06cd48e7014ac2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ea7df3d4-a076-4de3-b141-d806809213b8/country_acoustic_guitar_licks_for_beginners.pdf
    • https://48bd7725-9370-4d18-884e-e75d7b70c9c4.filesusr.com/ugd/f241d9_66cd85df4b78435cbba50d69154c6a69.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cc83f46a-74ff-4da9-8a76-cfdc0e744dcf/hisense_air_conditioner.pdf
    • https://uploads.strikinglycdn.com/files/9f285a1d-8c5b-416f-8d8c-e2666fecef2a/jerazusovorukunagisej.pdf
    • https://uploads.strikinglycdn.com/files/454ef37b-0a37-4243-91d0-3037f6554a6a/what_is_chaos_theory_in_management.pdf
    • https://394fded3-a37f-45fe-8092-07e0884d2d31.filesusr.com/ugd/bdbc91_0b69120562084c0eb170949d48e6f987.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d1cf833b-5c52-4b4e-9fb9-8f741d737fe3/how_to_start_procreate_pocket.pdf
    • https://3a0d5408-2ea1-4258-8d29-5d96341cad2c.filesusr.com/ugd/79cb75_61a792f084aa4b39bb3715480f7d471b.pdf?index=true
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_45510ce30ad34ff98fcd0e0f6b9e6b75.pdf?index=true
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_d88c1ae453d943289ec62a236add6a62.pdf?index=true
    • 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_off0000cef4.bin
9c6f1e228936c8626f2fece963413bd1815bd631de11622c17abccbc38b7834b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF4 5408 bytes
font_01_sfnt_off0000e16d.bin
1aae23c3ccba019ea3a7fa611b2ab08b07550c00a89cdd94910890a0e58227cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE16D 10676 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.