Malicious PDF — malware analysis report

Static analysis result for SHA-256 467e7330d8c6a77b…

MALICIOUS

PDF

90.6 KB Created: 2021-04-02 17:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 97329e3f8c76aad7ba72e10900c3f67a SHA-1: 80f00d7289354e83386e1a0a190b11a6b73d57c2 SHA-256: 467e7330d8c6a77b04729923bbd1922300e939c738623ae7bab7e3ea9c935940
126 Risk Score

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 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=three+kingdoms+bandit+queen+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418391/normal_603a8100d82c5.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/Ghdjbii/1907417204.pdfIn PDF document text
    • https://cdn.sqhk.co/jinokazif/Vgeihd5/48526744973.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/7976003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447497/normal_602423205a528.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/NDiieib/free_music_ringtones_download_for_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481155/normal_60208872c16be.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/AAXje7R/gumorowotab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fe5cf6b7a253.pdfIn PDF document text
    • https://zebilukirun.weebly.com/uploads/1/3/5/3/135306511/dewagono_remiwa_figesuretupig.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/ic6ghJX/cake_decorating_recipes_videos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5ffdc5a627518.pdfIn PDF document text
    • https://guxovegetixewaz.weebly.com/uploads/1/3/2/3/132302910/gozazalo.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
    • http://raferizowum.epizy.com/13232008967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/014fc1be-5e22-4b3c-913c-f93c436b0230/bunn_axiom_coffee_maker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/872c7bb3-5336-4c51-a592-8425757eec85/casio_g_shock_5146_manuale_italiano.pdfIn PDF document text
    • http://titizobilane.epizy.com/suxawoxodosaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fbc5f34-cfe8-4758-9370-0c60a1f0542b/sunbeam_mixmaster_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8937588a-66b6-42a8-83cb-9a26301f7273/7528460862.pdfIn PDF document text
    • http://wojotefeva.rf.gd/45060507899.pdfIn PDF document text
    • http://vigevelo.rf.gd/4909922106.pdfIn PDF document text
    • http://luresagapitep.rf.gd/ferrari_california_t_price_in_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebe6ff3-e9c4-4424-a8bd-fe896a9ce1ae/macbeth_modern_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea51d4f-6219-4121-a59f-311f0e0c445d/the_magicians_season_5_episode_13_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e93d45e4-2747-4d94-bd4b-57973ee8659a/fetibukodem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001175b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175B 5368 bytes
SHA-256: d854491752181756270e90b3af97e079e3d37ffb6da81c7e4ad7a3ec707c7c4f
font_01_sfnt_off0001295e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1295E 10796 bytes
SHA-256: 2ab16827a082e27004664842a26f3d43fc8ba128d24b7c98a15bdcc28d31c667
font_02_sfnt_off00014e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E16 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230