Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c893e02c220d2f…

MALICIOUS

PDF

75.3 KB Created: 2021-04-18 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 64c8e7d32a74ebcea3b57237632b67e1 SHA-1: e50d8db639bec26ab4f9e68157854ebb57133e77 SHA-256: 04c893e02c220d2f519735e32b719c6d8b774265832aa6a20a24dc1f09d37dc8
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=how+to+answer+a+why+question+in+history PDF link annotation
    • https://lelodudovoveju.weebly.com/uploads/1/3/1/6/131607117/8813016.pdfIn PDF document text
    • http://thrivewebs.com/21748644633sdoq0.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/pneumonia_infection.pdfIn PDF document text
    • https://vijopafixav.weebly.com/uploads/1/3/1/6/131636601/7976938.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/definition_of_motivation_in_psychology.pdfIn PDF document text
    • http://ravigimojamel.mypressonline.com/auto_transformer_starter_circuit_diagram.pdfIn PDF document text
    • http://raxewapikeb.mygamesonline.org/history_of_azad_kashmir_in_urdu.pdfIn PDF document text
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/bimirule.pdfIn PDF document text
    • https://litisenos.weebly.com/uploads/1/3/1/0/131071047/vaboserow.pdfIn PDF document text
    • http://trycabinets.xyz/how_to_write_a_business_proposal_to_a_sponsorybhfn.pdfIn PDF document text
    • http://pakekoramiduwin.getenjoyment.net/xetixipenezadalitabazi.pdfIn PDF document text
    • https://favoronul.weebly.com/uploads/1/3/4/4/134463409/bemimuvotalako.pdfIn PDF document text
    • http://itawegan.fun/what_are_smart_goals_in_therapy5g0n3.pdfIn PDF document text
    • http://gejurabek.getenjoyment.net/how_to_adjust_a_carburetor_on_a_poulan_chainsaw.pdfIn PDF document text
    • https://zarogamotelim.weebly.com/uploads/1/3/4/3/134344532/luseseburut.pdfIn PDF document text
    • https://dijamolilum.weebly.com/uploads/1/3/5/3/135347404/9267850.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jewofeket.onlinewebshop.net/43458043357.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/astm_a1065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5d991f-84fe-463b-993d-b4627a6ef462/kogum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a01e0d5-0616-47e9-9802-c50a852cc8a9/xutuwupukinevituwukifosu.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_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 5020 bytes
SHA-256: cfeead1d34d67812010e7dad701d8a22795867afd82083b3d35f5de3cb6235f9
font_01_sfnt_off0000fae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 10356 bytes
SHA-256: 55b908128b8d074c8bf1c7ad780e528593c90779da77d3067e6220894bc256af

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