Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bc41f3fb40228e…

MALICIOUS

PDF

69.4 KB Created: 2021-01-16 19:17:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c2bd1d002b7673b8846aeffb93fe8d2d SHA-1: 863bcf0994b6cc225c27a01df896d23751f0b4f6 SHA-256: c2bc41f3fb40228e33d70cb0eb2440e6e35437635b904db68af61ccf52ee4301
244 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to numerous external websites, some of which are identified as malicious redirectors. The document's content, though heavily obfuscated, appears to be a lure for various topics, including movie premiere tickets. The presence of a large number of links and the use of disposable hosting indicate a phishing or scamming attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/wb?keyword=dune%20movie%20premiere%20tickets In PDF document text
    • https://cdn.sqhk.co/letinumi/1Xgdghi/food_wars_season_4_episode_1_release_date.pdfIn PDF document text
    • https://dubekanenek.weebly.com/uploads/1/3/3/9/133997540/mefepeb.pdfIn PDF document text
    • https://tolixolosunep.weebly.com/uploads/1/3/4/4/134403343/tukivig.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/Ghdrjjh/nolofexumevokutenulelawid.pdfIn PDF document text
    • https://cdn.sqhk.co/nefowumik/X0RwmQ4/52565075736.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/8363686.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/igTghjh/classic_car_racing_game_pc.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/de121.pdfIn PDF document text
    • https://bupuxikamofimap.weebly.com/uploads/1/3/4/7/134734142/ed61205885fb2.pdfIn PDF document text
    • https://site-1167953.mozfiles.com/files/1167953/nrc_assam_draft_list_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/gWgijha/17975857334.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/fgjgcye/cinemark_iguatemi_brasilia_ingressos.pdfIn PDF document text
    • https://navijaxilof.weebly.com/uploads/1/3/2/6/132696044/narogiwipi-nevat-pefesaw.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/igcuQhd/sonny_and_cher_the_beat_goes_on_live.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/Gfgcagf/champion_of_the_gods_romance_chara.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD390 4960 bytes
SHA-256: 6b0e8afbe2e36e719b2f2a183d5e5d2eccd7ae7cd10ab3ec41bc25dd9334e3c2
font_01_sfnt_off0000e46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46D 10804 bytes
SHA-256: f9da501286fc41dc3df5fbb352e9dd7cff0aa3cdf78af796640c4be4be5c5862

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