Malicious PDF — malware analysis report

Static analysis result for SHA-256 032f35c5d9fef0be…

MALICIOUS

PDF

77.2 KB Created: 2021-04-02 16:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5a619e93eec5b63ca3a3ad62d7e55d4f SHA-1: a3d05a9d8ec358351e03f00725a948db1d0f9cdd SHA-256: 032f35c5d9fef0be4ed242e1eafedfcff430147c42296c55e8937b09f1ba3354
126 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains text related to 'maze runner 2 full movie free stream', indicating a lure to entice users to click on the embedded URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports a malicious intent, likely to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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://golowaki.ru/strik?utm_term=maze+runner+2+full+movie+free+stream PDF link annotation
    • https://cdn.sqhk.co/wepiwuvume/Kn5MYhe/mapimodovezavoki.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/ienShcb/rujukep.pdfIn PDF document text
    • https://woxawilafuzuve.weebly.com/uploads/1/3/4/6/134669094/deketa.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/hcrtokO/stick_z_super_dragon_fight_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/aEjdhf4/puzzle_games_world_of_logic_puzzles.pdfIn PDF document text
    • https://jatufabafalili.weebly.com/uploads/1/3/1/6/131637938/257ef2155a.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/k1hagfq/xalekedamajetemenibomefa.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/0mgjchc/54755630932.pdfIn PDF document text
    • https://zakiguranul.weebly.com/uploads/1/3/4/4/134480990/8785b.pdfIn PDF document text
    • https://kinixudowobi.weebly.com/uploads/1/3/5/3/135399761/nujomeguku.pdfIn PDF document text
    • http://jologedeb.getenjoyment.net/where_can_i_get_a_cat_neutered_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bepesewutu/Wgdhbhe/resttemplate_java._net._sockettimeoutexception_connect_timed_out.pdfIn PDF document text
    • http://risumeboze.getenjoyment.net/redozuvatadimamefubugodiz.pdfIn PDF document text
    • https://cdn.sqhk.co/wesuwajil/hTjchfE/10419409313.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/80c33cca-6d0e-4d1a-a079-1d2f33469678/35215016998.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d432ae0-4301-48cf-8605-fc1f047df093/bose_acoustimass_15_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b29c66-7f2c-4b68-ad35-5a428197ddb6/24649235229.pdfIn PDF document text
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_56766e9da27544728d4e241beeb2f2fe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/48294d22-85d3-49c0-8923-32ce8bc13210/resiferabagezo.pdfIn PDF document text
    • https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_4a57e85856b941708502e962a6ad02a1.pdf?index=trueIn 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_off0000f109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF109 5160 bytes
SHA-256: e211a33d2f1fd0eb30c383feed4183302263336bd762eb35ba1acae4e981c321
font_01_sfnt_off000102a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A0 10872 bytes
SHA-256: c9fb70a5bafdd9171be3ac0a1528a18ec6ada2422f889075a9f7743c195fa581

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