Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b0e6e946add600…

MALICIOUS

PDF

71.1 KB Created: 2021-03-06 16:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 68093019c56acfe210d74bd3be11917d SHA-1: b026456c242a3135ae974414a82ca8dfbae59c8c SHA-256: 25b0e6e946add600cd0fb0d1e384aab6f7519376aec3322ca182b2f4e2f8c393
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on `https://dugedepap.ru/wix?keyword=8+ball+pool-hack.info`, which is flagged as a link farm on disposable hosting. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/wix?keyword=8+ball+pool-hack.info PDF link annotation
    • https://cdn.sqhk.co/kimefutif/hdUihVI/digestion_definition_simple.pdfIn PDF document text
    • http://paxezimusosesa.scienceontheweb.net/what_does_the_bible_say_about_the_potter_house.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/Ogfjbic/dunk_a_lot_apk_hile.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/wood_top_coffee_table_with_metal_legs.pdfIn PDF document text
    • https://cdn.sqhk.co/vadavenaw/2jh3Ktm/fijigosekomivel.pdfIn PDF document text
    • http://gaxesujite.medianewsonline.com/ravujebobasedupefif.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/Lhay3gd/gonarofamuwuxumosumixoro.pdfIn PDF document text
    • http://kokolonesafu.getenjoyment.net/simetojonadoworara.pdfIn PDF document text
    • https://cdn.sqhk.co/zazavoxujub/ehaBVhi/amazon_prime_movies_to_watch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://41fe7446-7195-45c8-906d-de5e784989f9.filesusr.com/ugd/e02969_b98f91543f4e49e9ae3df1d285aef83e.pdf?index=trueIn PDF document text
    • http://tiwatimab.atwebpages.com/maytag_4000_series_washer_drain_pump_filter.pdfIn PDF document text
    • https://f200304d-316b-45a9-b05c-680123ec6d1a.filesusr.com/ugd/aad1a2_3ca72b9f9d544da2a98de116871f6943.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lunojol/ripobudorop.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/38871216695.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/animation_movies_website.pdfIn PDF document text
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_e154ddaa0a644ab7bc40e78e426c6db2.pdf?index=trueIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_a1782ff02f4b4d099108b3f65360d32e.pdf?index=trueIn PDF document text
    • https://0bdb67af-4c57-4a6e-9706-714cc80719f5.filesusr.com/ugd/fc840b_64ebd0d08eef427ea85c2749612f0684.pdf?index=trueIn 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_off0000da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9A 5196 bytes
SHA-256: bf8908762ddb49fa3e8fe9f2f002c2b5274cbfa18dad3aeff4857d5330ac54c5
font_01_sfnt_off0000ec50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC50 10228 bytes
SHA-256: d05c14c5105acaab48756e1ddef3eccabd591db2bfea1f5b027f8ff126965d46

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