Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e68a0e6f9c4667b…

MALICIOUS

PDF

90.4 KB Created: 2021-03-18 01:19:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5b2dee131410bbb38a7bf9bcacb4f77a SHA-1: 832bee3d2ff4dd37be7f619945804f76902347f3 SHA-256: 0e68a0e6f9c4667b35e1783272bad325cab79f60eacb2dc2f20fe524c5d68bc4
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 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 0.9998

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://xajibur.ru/wix?keyword=chapter+4+to+kill+a+mockingbird+annotations PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409606/normal_601f8f8d12f3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389090/normal_604db459561d0.pdfIn PDF document text
    • https://nixetamusizag.weebly.com/uploads/1/3/0/7/130740210/baxufutofobu.pdfIn PDF document text
    • http://ragesedanem.iblogger.org/frog_respiratory_system.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/qxwMiiI/sumo_robot_ev3_design.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484812/normal_60192f163a84f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_603c026d408a6.pdfIn PDF document text
    • https://pakedarisibibo.weebly.com/uploads/1/3/4/5/134501134/21f91c1c0.pdfIn PDF document text
    • http://vezokikawelin.iblogger.org/why_is_my_playstation_controller_blinking_red.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414680/normal_5fecd0026300d.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/0a5c1.pdfIn PDF document text
    • https://zuzuvisaze.weebly.com/uploads/1/3/0/7/130738998/xalobivupoba.pdfIn PDF document text
    • https://cdn.sqhk.co/pisomuma/djdEjjI/star_wars_pinball_7._0_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455375/normal_6041843a845fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_417f85a3b55445dd82375689b5177ad5.pdf?index=trueIn PDF document text
    • https://058da8ce-bb30-4b8c-81eb-8903018cac65.filesusr.com/ugd/ab745b_a15acb0c54284809a146c19af75351f9.pdf?index=trueIn PDF document text
    • http://judixipe.epizy.com/android_studio_bitmapdrawable_deprecated.pdfIn PDF document text
    • http://zabezotep.epizy.com/custom_action_sheet_ios_swift.pdfIn PDF document text
    • http://molumazorok.rf.gd/94763812915.pdfIn PDF document text
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_75292d0fdc9f45ca80ffbe1ead9f9f33.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_off0001231f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231F 5684 bytes
SHA-256: 5250a571f087201fb7c22b88ed92f412de987aac2d9978c641506218737eebac
font_01_sfnt_off0001363f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1363F 11220 bytes
SHA-256: fdecfc63207f1b722fae201dda19febb22babd93dc728e11b6636716b902688c

Open this report in the interactive analyzer, or submit your own file for analysis.