Malicious PDF — malware analysis report

Static analysis result for SHA-256 005d8a49d9e5a6d0…

MALICIOUS

PDF

96.9 KB Created: 2021-04-25 05:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1bac06baa8e88f0569dfb1921a6e9b22 SHA-1: 012e9ea39557bb6502cdced827fc28aebe131ec1 SHA-256: 005d8a49d9e5a6d0ec7c3ede4bf3aae284f7171e63e848b9d71efcd22917576b
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics as malicious, including a ML classifier and ClamAV detection for phishing and trojan activity. The document body, though corrupted, suggests a lure related to 'Dungeons and dragons class guide' which redirects to a URL on 'soxebez.ru'. This indicates a phishing attempt to redirect users to a malicious site.

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://soxebez.ru/strik?utm_term=dungeons+and+dragons+class+guide PDF link annotation
    • https://cdn.sqhk.co/feguzuvubut/hiUbrha/horizon_fitness_treadmill_belt_adjustment.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/7_day_apple_cider_vinegar_cleanse_jj_smith_recipes.pdfIn PDF document text
    • http://dobanojuwelog.22web.org/63672254863.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/cjfgfjh/st_andrews_bowling_club_weston_super_mare.pdfIn PDF document text
    • http://tokemiji.22web.org/31306337865.pdfIn PDF document text
    • http://kixurox.getenjoyment.net/natixukuxinakojo.pdfIn PDF document text
    • https://cdn.sqhk.co/nepajenine/WehjRjc/kexoxazu.pdfIn PDF document text
    • http://bixekakazozerol.mywebcommunity.org/object_oriented_programming_c_book_3rd_edition.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/41886585081.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/GhaGQid/pianist_english_name.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://bukaduxanob.epizy.com/85619715964.pdfIn PDF document text
    • https://d6504552-49b0-4b7d-b1ff-94f9e1082b83.filesusr.com/ugd/1f0558_60fba8c54b2844ec960b2351387c6e1d.pdf?index=trueIn PDF document text
    • http://ninanupazazudad.rf.gd/sample_music_brochure_templates.pdfIn PDF document text
    • http://gefuxexo.epizy.com/boston_market_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/words_that_start_with_n_that_are_positive.pdfIn PDF document text
    • http://fologipuvug.epizy.com/instrumental_music_bollywood_2016.pdfIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_755232d573fc4b058a4a5cf05ceba932.pdf?index=trueIn PDF document text
    • http://vaxomuterok.epizy.com/medullary_thyroid_cancer_guidelines_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/are_pt_cruisers_reliable_cars.pdfIn PDF document text
    • http://netidufek.rf.gd/blade_runner_william_burroughs.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_off0001312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312C 4908 bytes
SHA-256: 9d1ab46e60c9e8a8a7fd68a26c31324e2c0ec740df4e9855c3da32251a7417db
font_01_sfnt_off000141e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E6 11244 bytes
SHA-256: 02f407e57ae034577058b7b4d5560f50acb065c998f863f77ed44f4f92fc0555
font_02_sfnt_off00016834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16834 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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