Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f76c060bb09ec3…

MALICIOUS

PDF

97.3 KB Created: 2021-04-04 02:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0b564a8c0892e568dec561a7f7bf30b3 SHA-1: 750f17ae12f3917d4ca554ce4fa27f984aa2d2b9 SHA-256: 03f76c060bb09ec385e5912b3b715daa537f9db171ea85bf9b30396d4a1a6ea8
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 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 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://lozipotod.ru/strik?utm_term=simone+de+beauvoir+second+sex+summary+pdf PDF link annotation
    • http://flymoney.net/after_book_series_parents_guide269un.pdfIn PDF document text
    • https://cdn.sqhk.co/fupipevu/bjbMgfJ/first_aid_kit_emmylou_album.pdfIn PDF document text
    • https://mogatuzutixu.weebly.com/uploads/1/3/4/6/134684840/6f98652821d2.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/ajyFJFj/showdown_of_generals.pdfIn PDF document text
    • https://tuxewuwa.weebly.com/uploads/1/3/4/7/134776055/5329116.pdfIn PDF document text
    • http://espacecmb.xyz/wheel_of_time_the_great_hunt_audiobook_downloadbpevn.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/ghk824m/95400668865.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/6dggji6/mujimexaruvoz.pdfIn PDF document text
    • http://idealica-it.website/nedigerakawosavepazag0qf.pdfIn PDF document text
    • http://tgesheff.xyz/manual_de_chevrolet_optra_2007_en_espaolfeax0.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/3c038871-7156-4ec3-865a-aebe23e26b0d/2828961003.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/79491213910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b5bac65-fd5d-4e87-bb65-2c3a5626eca0/difference_between_evolution_and_revolution_in_tabular_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/kulikulow.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_696a7cd5b7a445deb940461fa9613bee.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e750ae96-4d43-4c79-8a12-768d6f8944d9/eragon_2006_full_movie_in_hindi_download_filmyzilla.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_2e77aa86a1b34f9bbe6e585468d75715.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f5b68b4-f762-4c93-a8a3-1d186836a2a7/paint.net_drop_shadow_plugin_tutorial.pdfIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_1b429581e8904accaa895c67316d1437.pdf?index=trueIn PDF document text
    • https://dd6f0c70-611b-430f-b219-ee0593fd0e1f.filesusr.com/ugd/d60051_bc3b336c4d254808b06f0ecd4d52d55a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/50711538426.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_off00013b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B19 5744 bytes
SHA-256: dc6650b9d5a11aaa12565facf735062d59b8a30e7d442c58ea4756e80003689d
font_01_sfnt_off00014e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E98 11900 bytes
SHA-256: 718f5e8e6e2053a67650bb26a0c8d7e3ef89fd8ece3c48f3ec4a3fbfbc8c8284

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