Malicious PDF — malware analysis report

Static analysis result for SHA-256 be74236bd5e24f22…

MALICIOUS

PDF

75.9 KB Created: 2021-06-05 08:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 387d7a0577fda376609c4185651de3f8 SHA-1: 0a77a9f7094fefe754224c41876dfc5e88067069 SHA-256: be74236bd5e24f227a4b528a26e1aa28188c22ff8b339454d0a030702564285f
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and an ML classifier, and is detected by ClamAV as Pdf.Phishing.Trojan. It contains a large number of external links, many of which are on disposable hosting and utilize UTM parameters, suggesting a link farm designed to redirect users to potentially malicious content. The primary URL points to a search result for 'Rabb da radio 2 movie songs download mp3', indicating a lure for users seeking media downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://philabc.ru/pbw?utm_term=rabb+da+radio+2+movie+songs+download+mp3 PDF link annotation
    • https://lapefobok.weebly.com/uploads/1/3/4/6/134663543/4611565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_600e63a99b6aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468571/normal_60521ece241d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476140/normal_5ff685ad57fc8.pdfIn PDF document text
    • https://xafudilolara.weebly.com/uploads/1/3/4/7/134744509/gixubab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_602019dbd8408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5ffaa995e9c52.pdfIn PDF document text
    • https://zapidowezagija.weebly.com/uploads/1/3/4/0/134041255/laleboz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd54e158-de14-444e-b1f1-051c505dd00e/41436819638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2095c1fe-52ad-4f31-a8ec-12d34dc54e64/seniors_exercise_classes_toronto.pdfIn PDF document text
    • http://vosebim.pbworks.com/f/48982232632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f33c37-4aaf-446a-9db3-a220038a3c16/tokoboruputaxexani.pdfIn PDF document text
    • http://fuvotobike.pbworks.com/f/dimensional_analysis_practice_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10df008f-cdf2-42db-8fe2-675cc957a4a7/vibunasomojiz.pdfIn PDF document text
    • http://vadibun.pbworks.com/f/47406610779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e64d357-690b-4c3a-8ba1-79be0be10838/kafib.pdfIn PDF document text
    • http://zixereves.pbworks.com/f/hindi_vowels_and_consonants_worksheets_for_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56cdab35-b93a-436d-af4c-cc7c25bb2d8e/muruvog.pdfIn PDF document text
    • http://pebenuziwi.pbworks.com/w/file/fetch/144548391/how_to_download_pokemon_randomizer_nuzlocke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/686f1fa6-f86b-4038-888e-bdd572caa14c/how_to_play_spades_card_game_2_players.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb47ba3-510e-4cc4-93f3-38d45ba0c374/36278208302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c9f73cd-404d-4f9e-add1-e48b1b0e713e/what_is_infinite_geometric_sequence.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_off0000e8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EF 5872 bytes
SHA-256: 0ddad4aaea9130167e1de19421b917f925deff09896c3c8dbe26e3f76fed8373
font_01_sfnt_off0000fce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE8 10812 bytes
SHA-256: a63aa2a6ab4886b0574d9b71430aaba5ed68d85ec717843c74ffc00be0831877