Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4ba17c57505190…

MALICIOUS

PDF

70.7 KB Created: 2021-03-05 03:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c75811626b8dd47442b9f82b803d6c57 SHA-1: 79e9e5885e48ce0623063fa9fd700ccaee3348cf SHA-256: be4ba17c57505190beebec5f64bb47edc38aa8a86307352fe836623017a7c0c3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/wix?keyword=buford+t+justice+song PDF link annotation
    • http://theraisins.pro/area_and_perimeter_of_composite_shapes_worksheetjs12e.pdfIn PDF document text
    • https://madovokego.weebly.com/uploads/1/3/1/4/131409717/figeromojepepil.pdfIn PDF document text
    • http://dkmz2.club/2318921008asaw0.pdfIn PDF document text
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/3379893.pdfIn PDF document text
    • http://drovazvenigorod.ru/eagle_claw_egg_sinkersdgo5u.pdfIn PDF document text
    • https://wonefosobafig.weebly.com/uploads/1/3/4/4/134479447/dumafesi-sevixomilo.pdfIn PDF document text
    • https://legopaxazomunan.weebly.com/uploads/1/3/5/3/135396831/2560252.pdfIn PDF document text
    • http://fruktovik.com/kipapiwiwezubsm.pdfIn PDF document text
    • http://difemetudanad.22web.org/15557875340.pdfIn PDF document text
    • http://usacreditcheck.info/auslogics_boostspeed_8._2x6gee.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/4db59b37-18a8-4459-ad0e-9502b553392d/delutigojadagaxuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ca2ddf-851f-4080-8e1c-0917140a3362/machine_learning_and_ai_jobs_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7c0335-26fd-4034-9960-f965654939f9/53704463097.pdfIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_ca6dc555a80340b989b1912d7619f67f.pdf?index=trueIn PDF document text
    • http://tojizuwit.epizy.com/dowuwafapajulego.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_1d196b92a0014dbc89cfdae4ac0e8194.pdf?index=trueIn PDF document text
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_78f4106cae5a44e5bbe3a5f1badbaa55.pdf?index=trueIn PDF document text
    • http://foxadawimuwewar.epizy.com/varulezunugixenafosuw.pdfIn PDF document text
    • https://5634f520-c25d-421d-ab67-3d94505d13cb.filesusr.com/ugd/1b85ab_009903e7cfff4c339b79c19ff9f8eeb9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/16db1543-3b1a-4140-87ea-1c8dc5a856cb/21057874712.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_d502b6272fcb4ec1903d3a8bdcadd0bf.pdf?index=trueIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_6411061216f748149e02341bc7b30db6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/507ff2eb-2c29-4039-9c35-162e0a441eac/bose_sounddock_series_2_watts.pdfIn PDF document text
    • http://tunufefenus.rf.gd/71394278721.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_off0000dab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB8 5072 bytes
SHA-256: 70fa447f813923bcefa4fc28f6266ebf17e20132c315d4015a8f48d08b39e6ba
font_01_sfnt_off0000ec17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC17 9760 bytes
SHA-256: 42b2d30097e35365c292e354d1ec0ed0f975cd7015db86cf2625943286f27a0d

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