Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de802f65d0e239f…

MALICIOUS

PDF

78.8 KB Created: 2021-03-23 12:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 82a5873b4ca252d4381f5bcfb0691269 SHA-1: e4e646874ba5b15586d8ea5eee020fa7f6ce23b0 SHA-256: 0de802f65d0e239f5e20cccbcdb4fde95407a21881e03d0f65df2e9f87553b65
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The document body, though heavily obfuscated, contains a lure related to 'Sanyo 65 inch 4k smart tv reviews', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://ponafet.ru/strik?utm_term=sanyo+65+inch+4k+smart+tv+reviews PDF link annotation
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/mewejiri.pdfIn PDF document text
    • https://xisevulatunetu.weebly.com/uploads/1/3/4/5/134595014/38d3d6a9a8e98fd.pdfIn PDF document text
    • http://blockingscenery.com/facebook_marketplace_uk_feesgmgam.pdfIn PDF document text
    • https://limowidijepa.weebly.com/uploads/1/3/5/9/135992559/555608.pdfIn PDF document text
    • https://bifawodeg.weebly.com/uploads/1/3/5/3/135348479/pezudijixurep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386094/normal_6018df245b411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493569/normal_605387d3d881e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417805/normal_5fd7d21d229f8.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/what_are_the_three_main_economic_questionst7cnh.pdfIn PDF document text
    • http://rubarenuruvofi.iblogger.org/46698797751.pdfIn PDF document text
    • http://mosaniz.22web.org/adb_drivers_for_windows.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_60217f831fb7d.pdfIn PDF document text
    • https://duwiwobejul.weebly.com/uploads/1/3/2/7/132740292/virotetokap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76bf42c0-7447-45ed-8dd3-33f9786ae3ae.filesusr.com/ugd/ba2c19_7bf096bffd1d4823886f1e851e634e16.pdf?index=trueIn PDF document text
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_30cd3c3b68b7455c856fd6c708a9c10a.pdf?index=trueIn PDF document text
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_57f73c1be0ce4217b9c318d33a6a2726.pdf?index=trueIn PDF document text
    • http://kotutuvotijol.rf.gd/lecture_ready_3_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/the_places_that_scare_you_book.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/chess_titans_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/delta_shopmaster_miter_saw_with_stand.pdfIn PDF document text
    • http://zakutipatijike.rf.gd/genetics_definition_biology.pdfIn PDF document text
    • http://fikasusetin.epizy.com/purple_martin_birdhouse_plans.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_off0000f0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C3 5792 bytes
SHA-256: fb1d10f3396d6212a60f9e690700c157ff694fff58d0cef595e076e8e5790d9a
font_01_sfnt_off00010475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10475 11800 bytes
SHA-256: 98c60cdada9fa9f44beb6d62d8f383b83f19d56295c146e595121d5dcb72d7c6