Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa17371d4dbd8b05…

MALICIOUS

PDF

106.8 KB Created: 2021-03-30 18:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b5df7b186f02a35b431ea4b7726f5394 SHA-1: 17a0cea144a4eb5d8bb2beaa1e038bbf302b78b7 SHA-256: fa17371d4dbd8b050376b4cb858042d5bbfc1c62d78aa9933fae1827e1649d70
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 5

  • 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 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://jottigo.ru/wix?keyword=garmin+gpsmap+76+manual+espa%25C3%25B1ol PDF link annotation
    • http://soderenofironev.iblogger.org/antigone_anouilh_livre.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/bmgiXgt/warband_heroes_tactics.pdfIn PDF document text
    • http://bekasopeli.22web.org/87121773986.pdfIn PDF document text
    • http://tb-films.ru/pure_substances_and_mixtures_worksheet_answer_key9uep3.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/liieiaw/panupupiwomub.pdfIn PDF document text
    • http://all-host.site/equifax_125_claim_form69b8l.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://fbdirect.site/intel_dx58so_motherboard_specs17ebs.pdfIn PDF document text
    • http://fufodew.22web.org/english_conversation_practices_by_grant_taylor_download.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/c01a3ba7-cbbe-4108-bdd3-5c38e84ea498/dijibi.pdfIn PDF document text
    • http://figofubinodafe.rf.gd/33786046242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d297f299-e5ee-4beb-a3f8-5725caa56813/what_is_a_solution_in_science_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44d8d0f-62cd-4dd2-9e97-83cf1aa06f7d/casio_classic_w-800hm-3avef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434e36bf-d9f8-4bbd-a899-19c8e3902c5a/vista_128_turbo_programming_manual.pdfIn PDF document text
    • http://befejuzawafuv.epizy.com/bugorasukuvotakugajopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb74b26-5cf3-4073-8e97-a506f2ae6ce0/rixexovara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f0a575-4813-4725-899a-ba77d84f947f/79723796489.pdfIn PDF document text
    • http://tiwobera.rf.gd/pivezerose.pdfIn PDF document text
    • http://risuzapusujafeg.rf.gd/the_design_of_the_unix_operating_system_by_maurice_j._bach.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e1c4495-229b-4c57-a3fb-83b580ac6c83/xojikelakatigipozawagasu.pdfIn PDF document text
    • http://vigopul.epizy.com/68329432421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19d78cc7-7982-422c-984d-1d6d2257c1c1/when_does_stock_market_open_uk.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_off00016305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16305 5616 bytes
SHA-256: e957564f785afe7b9ab14aa707b66729abfddf192c9cee3f84289257ef2b7a3a
font_01_sfnt_off000175d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175D2 11968 bytes
SHA-256: 261c9690a0ee35e846f85c07b23996f090a765c16f9523baa07e1b0640e37475

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