Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d95c9cda8edad9c…

MALICIOUS

PDF

133.3 KB Created: 2021-03-30 04:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cea87b12c8f5a3e1b38efbf9b551d406 SHA-1: d7f127b0d455d45aa33485dfafd259468d9b3c5e SHA-256: 0d95c9cda8edad9c15d0120cd1121c7bdcbd8a66d4f62ad40ed03b9893199fb0
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to 'Xiaomi' and 'redmi note 4', suggesting a lure to attract users interested in these products, likely for a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/123?utm_term=xiaomi.+eu+redmi+note+4
    • https://static.s123-cdn-static.com/uploads/4487432/normal_5ff51a38a4851.pdf
    • https://cdn-cms.f-static.net/uploads/4417659/normal_601388c6edb5f.pdf
    • https://static.s123-cdn-static.com/uploads/4379237/normal_5fdd75008a548.pdf
    • https://cdn-cms.f-static.net/uploads/4487927/normal_6048c450e81be.pdf
    • http://gamuxiwami.getenjoyment.net/what_seasoning_does_taco_bell_use_on_their_fries.pdf
    • https://cdn-cms.f-static.net/uploads/4496602/normal_6010e3d10c081.pdf
    • https://cdn-cms.f-static.net/uploads/4392439/normal_604da80fe242d.pdf
    • https://cdn-cms.f-static.net/uploads/4469847/normal_60322401b1e63.pdf
    • https://static.s123-cdn-static.com/uploads/4378843/normal_5ff13f5371526.pdf
    • http://tradestaroffice.com/ranked_choice_voting_pros_and_conserxf8.pdf
    • http://legionmone.xyz/burger_king_crispy_chicken_sandwich_ingredientsv9eqb.pdf
    • http://strongcreditscore.info/wanderer_above_the_sea_of_fog_romantic_elementsjm8rf.pdf
    • http://comp-arenda.site/newemi8od5f.pdf
    • https://cdn-cms.f-static.net/uploads/4366620/normal_5fd77ddb481fd.pdf
    • http://salizurewaki.mypressonline.com/27967561715.pdf
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5fe6783bd7df5.pdf
    • http://betmoy54.com/john_locke_essay_concerning_human_understanding_book_1kjzbq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d00441fa-85ca-4e5a-8eef-b3987a841c1f/is_a_tesla_worth_it_in_australia.pdf
    • https://uploads.strikinglycdn.com/files/22e411bf-023a-4802-83ef-901c29a51568/the_game_changers_book.pdf
    • https://uploads.strikinglycdn.com/files/9b7f15f6-4214-4eff-8e2d-f322859791cb/are_cub_cadet_utv_any_good.pdf
    • https://uploads.strikinglycdn.com/files/089fd081-5f16-4fe1-8539-7815d1549032/tetirubirivudojo.pdf
    • https://uploads.strikinglycdn.com/files/cde15dc7-095c-4933-ae94-557e6c31b8c3/19221785660.pdf
    • https://uploads.strikinglycdn.com/files/5bc5a3f4-7d30-4889-bf59-3de1b40f512a/coleman_furnace_parts_lookup.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bf7b.bin
6da69f4149f770bf4d7d27789d0f5c8b2f460029319e7258e080d9d3d3f5105d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF7B 4740 bytes
font_01_sfnt_off0001cf7e.bin
cd9d77c6b6d71caa7cce451ed81c00c9d29720989297b82dfdc558b2687f8530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF7E 12452 bytes
font_02_sfnt_off0001f907.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F907 4324 bytes

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