Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c0376168ebde82…

MALICIOUS

PDF

83.5 KB Created: 2021-03-28 13:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8ab37941bb93b2166c1703434bfe0232 SHA-1: c07c0840ca4f5f4715f61d4fb0f07057abc6c1a8 SHA-256: 93c0376168ebde824b7863b782cda6f7eca9964cb6b489e8586092341d1ab5ce
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 4

  • 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://ponafet.ru/award?keyword=exercices+orthographe+pdf PDF link annotation
    • http://nulivanofika.mygamesonline.org/el_poder_de_una_visin_joel_barker_resumen.pdfIn PDF document text
    • http://magic-spring.com/gutonogarepapomadee6wff.pdfIn PDF document text
    • https://cdn.sqhk.co/noxavuris/blvge9G/bebadiwinijogevokefadevi.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/cual_es_el_proceso_de_investigacion_cualitativa.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/Zhbnjdl/easy_cake_recipes_without_oven_in_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/wigalefu/jjmdWgd/tv_repairs_near_me_cheap.pdfIn PDF document text
    • http://mejumeroxara.mywebcommunity.org/fipilimevon.pdfIn PDF document text
    • http://buloshnaya.site/what_are_the_four_theme_parks_of_disney_world674rt.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/ihsjeSY/download_game_dream_house_days_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_2833b998cee144c59e9a5a2b2b25de6f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee20bba-0a1e-4889-87aa-29d79b0a5cec/bosch_800_plus_series_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e1a89f-1e95-488a-a719-619dca47bf75/sentry_safe_says_unlocked_but_wont_open.pdfIn PDF document text
    • https://16dc6c2a-32e3-4a69-9eea-5b59d93654f8.filesusr.com/ugd/176c29_dd631bb406e84cda8c5a1ea4458eac2c.pdf?index=trueIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_df8e9425d9314fdc9099ee48ba10f294.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d8ac744-0fa6-49b1-b629-8e2113373eec/6936546495.pdfIn PDF document text
    • https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_5453d6948893428bbc0f2bf3dcf6fdcb.pdf?index=trueIn PDF document text
    • https://7ef7ebf0-bcb0-4ca2-8538-5a19c3e9f01c.filesusr.com/ugd/aff7ca_2fc4c40503a048f7a21cfd39ada71e23.pdf?index=trueIn PDF document text
    • http://wejufutaz.onlinewebshop.net/caderno_de_caligrafia_artistica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57819a02-edf2-4b22-822f-842304921054/master_forge_smoker_parts_list.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FD 5092 bytes
SHA-256: 0411bb089c51d48f053b878975a044198c302c9db3212394b7eed4e52d70c280
font_01_sfnt_off0001086c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1086C 13084 bytes
SHA-256: 3b08d622f659798ea24c7f074878e3965d2b0fcc85c26d93ea9a12c6e97a95c8
font_02_sfnt_off00013159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13159 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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