Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e924b5e704cf08…

MALICIOUS

PDF

74.3 KB Created: 2021-03-05 08:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a07abcb5c88f4c04558339ead226730c SHA-1: 3b3b545878a049b3ddac1c9c183cfdd8d4bd5f4b SHA-256: 47e924b5e704cf08fe7e842d214b5cbfdc5ff13d3812825ee2ca7555dae4a7ff
186 Risk Score

Malware Insights

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

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 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/strik?utm_term=what+is+called+ionic+bond PDF link annotation
    • http://nigavereke.mygamesonline.org/ergobaby_omni_360_mesh_baby_carrier_oxford_blue.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/52012540017.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/jigjjcM/16222792695.pdfIn PDF document text
    • https://beperupofifu.weebly.com/uploads/1/3/1/6/131636755/9545974.pdfIn PDF document text
    • https://rutelixiriselop.weebly.com/uploads/1/3/4/7/134748314/8773033.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/romeo_and_juliet_essay_prompts.pdfIn PDF document text
    • http://vuwefedope.sportsontheweb.net/detotorixadinukosiperi.pdfIn PDF document text
    • https://bivejeweki.weebly.com/uploads/1/3/4/3/134322338/d2ce98c19edcf5b.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/fosena.pdfIn PDF document text
    • https://cdn.sqhk.co/sewiboveso/Fgcihgf/bike_mayhem_mountain_racing_gameplay.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/26420802147.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/R4hf9if/swing_states_list.pdfIn PDF document text
    • https://cdn.sqhk.co/zisenusaf/h6iioje/dc_comics_hottest_female_villains.pdfIn PDF document text
    • http://hellochildren.online/vuletapotexigarabafovuna6dtvs.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/fjaeCic/lokobidamepuf.pdfIn PDF document text
    • https://lukadivosegiga.weebly.com/uploads/1/3/4/6/134679105/8678281.pdfIn PDF document text
    • http://ovca.space/17777488501vutjm.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/what_size_screws_for_samsung_65_wall_mount.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_6f41fd824bf94eeb8c0797dcd5bb1f21.pdf?index=trueIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_134331d5b9f241b9a5844417d46cb799.pdf?index=trueIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_a1e380e28c2448659b65f5a73e18fb63.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_off0000e70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70F 5084 bytes
SHA-256: 021dba8b37066d0c96b400400bf31d107de382fd075869b894492e9b92060535
font_01_sfnt_off0000f861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF861 10412 bytes
SHA-256: 928ff32c68bc7f2a7b6b68571e3b36e5405d170a38a9e971f8edd471519bc56d

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