Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f01fd30d08ca01d…

MALICIOUS

PDF

78.8 KB Created: 2021-03-16 18:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f7262ee8466a64b52f69a6851b2a31c2 SHA-1: 48f9dba1341f5d977471e482ff1c09d227aea773 SHA-256: 7f01fd30d08ca01d6cd2c6f00fdeacf927439786c38f61e601741f3e3714ebe4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The embedded content, though heavily obfuscated, likely serves to facilitate the redirection to these external URLs, potentially for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://jottigo.ru/strik?utm_term=how+to+get+toned+arms+without+weights PDF link annotation
    • http://mevixonur.mywebcommunity.org/cemento_cruz_azul_ficha_tecnica.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465386/normal_600caab94d341.pdfIn PDF document text
    • http://zozamowewideno.mypressonline.com/81209849918.pdfIn PDF document text
    • http://apparently-home.com/87961047157mowvw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_604f8bf3dafc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5ff9b4e69ae3a.pdfIn PDF document text
    • http://kufejat.sportsontheweb.net/trane_xl80_furnace_filter.pdfIn PDF document text
    • http://lutirojibafap.sportsontheweb.net/budget_2020_20_pib.pdfIn PDF document text
    • http://espacecmb.xyz/tumesudujuxijuzufueaw.pdfIn PDF document text
    • http://sparzha.club/begebeferodotumejutabops5ni.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/what_is_single_phase_and_3_phase_motor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_01a7dad2a10c46b9bb8b1ddb3102790a.pdf?index=trueIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_dea417613bfc4d8a9bf6caef081b4821.pdf?index=trueIn PDF document text
    • https://84bd2c60-91d0-47b6-9565-6ae8a6593e58.filesusr.com/ugd/963627_b68f1a2903d4499aae8adcdb610d582c.pdf?index=trueIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_cd8bb1d0ac5e442ea76d6663d52c9142.pdf?index=trueIn PDF document text
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_7aa8f524d54749f48733a27e6445bae0.pdf?index=trueIn PDF document text
    • https://fe92b815-f0fe-4223-924b-659339f44b90.filesusr.com/ugd/8f64fc_042a3fcf33d24d8bbc58d845898be908.pdf?index=trueIn PDF document text
    • https://81da36f4-dec6-4bf4-836b-19ed67500659.filesusr.com/ugd/5fd5c1_3a10712f90e74336942335c3a1a8d756.pdf?index=trueIn PDF document text
    • http://nerezusilanake.atwebpages.com/pivirowijemevunoteremise.pdfIn PDF document text
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_1286d45c9fd546898ef953b369166df4.pdf?index=trueIn 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_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 5260 bytes
SHA-256: 4fe010da91664649cd852f38ac1b690ff01d0ebf75ad344b90af103c015b1a0a
font_01_sfnt_off00010a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A43 10504 bytes
SHA-256: 3ed9cbfa9645f7b8cfaa8f64367cbbcefa14023d7d863f15b474245665ecc0c4

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