Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ba05e013ff0d23…

MALICIOUS

PDF

68.7 KB Created: 2021-05-16 12:04:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c1a8fec4921d7a0f091fabc52c09ce65 SHA-1: 9ee188e20b5d43df449001500a1dd2d7bb3cf483 SHA-256: 60ba05e013ff0d237bcb58c3a721ac6e236aba33030921c104a7ea545b334856
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm or phishing operation. The presence of embedded URLs and the nature of the heuristics strongly suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=gilmour+impulse+sprinkler+troubleshooting PDF link annotation
    • https://cdn.sqhk.co/wepurodapike/TejiBjh/usa_ice_hockey_game_schedule.pdfIn PDF document text
    • http://tezoxefakalexo.sportsontheweb.net/definition_of_economic_environment.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/8ifhcig/defense_gem_ib3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_5ff2b06684dee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492901/normal_5fda66dc3c4a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_6041e427ecc70.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/xgf6fhd/13487955117.pdfIn PDF document text
    • http://nofubajabuv.medianewsonline.com/addressable_fire_alarm_system_programming.pdfIn PDF document text
    • https://cdn.sqhk.co/jekunesoru/CidhdYX/costa_blanca_property_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/59994204581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4da99af-6747-47d6-997a-43d7476e2ef6/telugu_super_hit_love_story_movie_list.pdfIn PDF document text
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_bff14eec64d4441aabc0f08b4480d0a4.pdf?index=trueIn PDF document text
    • https://80cb706b-a9cc-40e6-9cd2-ad5688d6c4a8.filesusr.com/ugd/c84a73_fef1682b9e9d4257abce71d5d72e7313.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fdf5310-6b4a-46f2-b6fa-ce686414383c/57806433260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f6b767-9325-4dce-a66a-7673b9204085/uniden_dect_6.0_answering_machine_user_manual.pdfIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_e0a97297d1444a0ea74d24a8eb64d60f.pdf?index=trueIn PDF document text
    • https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_870423ea15154b29a1ecfa414101b7ac.pdf?index=trueIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_0517ec80db594921996354f0ffd30e3d.pdf?index=trueIn PDF document text
    • https://95c758d6-fd33-43c6-b5d0-f1f55e07e946.filesusr.com/ugd/cb0188_ec8c3c3204e94aa18bf684fbbadc114f.pdf?index=trueIn PDF document text
    • http://bigapenegig.atwebpages.com/30206951854.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_off0000d0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BD 5256 bytes
SHA-256: f1f8c6f670332014fa39d26aa0ed5b5a803886a69e726d8bd9aec6276deffc1d
font_01_sfnt_off0000e276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 9720 bytes
SHA-256: 67f4449485bea7a84ba6558e1eb4a4936bd361224fffd7616bb5d75a14da879d

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