Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e6f327b4af8712…

MALICIOUS

PDF

91.0 KB Created: 2021-03-13 16:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 00cdf61a65420043b628582bc23346ff SHA-1: a65a7ef91ea8dd5f2fa10613c4a08339c0cf1a04 SHA-256: e2e6f327b4af871292ecf9861840022a75a53c2aa61b3e41b920d6cd816cd6c4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics point towards an attempt to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/award?keyword=hematopoiesis+pdf+indonesia PDF link annotation
    • http://instasurprise.online/aicok_ice_cream_maker_bl1500c_manualw77mh.pdfIn PDF document text
    • https://cdn.sqhk.co/zejovedelali/0IigjyP/37356198258.pdfIn PDF document text
    • https://nugumogixowujo.weebly.com/uploads/1/3/1/4/131437940/kamizifege.pdfIn PDF document text
    • http://lexidubug.22web.org/jesus_calling_sarah_young_book.pdfIn PDF document text
    • http://idealica-italiauficiale.website/buckingham_palace_tourist_guide98pb0.pdfIn PDF document text
    • https://cdn.sqhk.co/rogekanus/jsghidg/getoxusagepimiradowog.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/CwgdghM/candlestick_patterns_trading_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/igc6jei/28081460808.pdfIn PDF document text
    • http://gnatural.space/243658397050iqa9.pdfIn PDF document text
    • https://xijoxamapapi.weebly.com/uploads/1/3/4/3/134337958/4820517.pdfIn PDF document text
    • https://cdn.sqhk.co/xewasejeve/8sYNhhL/my_android_phone_charger_won_work.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/W6Ridja/one_clue_crossword_bonus_gone_fishing.pdfIn PDF document text
    • http://fofafik.iblogger.org/48393130735.pdfIn PDF document text
    • https://cdn.sqhk.co/siripeka/hhtibge/zuxewowedofuper.pdfIn PDF document text
    • http://ramosek.iblogger.org/figurative_language_devices_definition_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/gixejefi/lDAhggj/85541085816.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tikixowogozomi.epizy.com/best_performance_of_o_holy_night.pdfIn PDF document text
    • http://konugatevokaxot.epizy.com/butterfield_trail_village_performance_hall.pdfIn PDF document text
    • http://tekuxumavipu.epizy.com/11726262813.pdfIn PDF document text
    • http://merexarumok.rf.gd/how_to_find_my_forklift_license_number.pdfIn PDF document text
    • http://kopozeluzel.epizy.com/capital_structure_journal.pdfIn PDF document text
    • http://lugixevizopef.epizy.com/catalogo_ikea_2010_espaol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE6 1696 bytes
SHA-256: c80b935bb2e72fbf0bb54bead4dcf673e2ee9ff5a06d35ab91e29c0786333a85
font_01_sfnt_off00012710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12710 5020 bytes
SHA-256: 90df1a4be323707be541f056c1bb3383948eaee32177dd3d38e2571b39210799
font_02_sfnt_off00013810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13810 11180 bytes
SHA-256: a8db711624c734d14605d0655f7c445a89cfb48732b55e6658d7cc59ccf7cfaf