Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac95926c76c27f73…

MALICIOUS

PDF

78.7 KB Created: 2021-03-31 06:34:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: b6d6e94f8f0fd1eb4044a45afda409fa SHA-1: 2fa24a7ae38fb8b2e2a21f43a698e0555a78af6f SHA-256: ac95926c76c27f73c16bc23ea71790ae4ce946b002379485d345e627ab6390a3
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing lures, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded links point towards an attempt to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/strik?utm_term=ezgo+powerwise+ii+charger+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407795/normal_5ff631ca2af36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412568/normal_5fefcf614071e.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/8407237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501996/normal_5fca61a64075d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420604/normal_60522163086b9.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/haieShe/driving_simulator_games_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/sisowufabo/jiehi0f/carrom_board_powder_target.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452381/normal_600d79e2239ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fc961bbcb43b.pdfIn PDF document text
    • https://cdn.sqhk.co/rojisixel/ZBgMYf5/werodaritakokitifusebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489835/normal_6043bc1589acb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478148/normal_60125abb1c2e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_60386fbcbdaf3.pdfIn PDF document text
    • https://ribupawotomimam.weebly.com/uploads/1/3/4/6/134694318/bea20ce6e13d18e.pdfIn PDF document text
    • https://kesuvovim.weebly.com/uploads/1/3/5/3/135317554/494cf3a68.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/ZpZ78he/anime_character_maker_2_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/good_food_guide_apple_crumble.pdfIn PDF document text
    • https://89f68ddc-9f98-4e60-8afa-3e0ca6603e9e.filesusr.com/ugd/4725f1_8f8800b6a14a45dba889d94c3e594339.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/sfm_steam_workshop_er.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/reparto_juegos_del_hambre_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/euclidean_distance_transform_algorithm.pdfIn PDF document text
    • https://4c6480a9-ccec-4c20-853c-cc48681c44ad.filesusr.com/ugd/935adc_cb019aadedd848cbbd1423a26ef458d7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/range_aarsh_benipal_song.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_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 5444 bytes
SHA-256: 810833516fff32b00192748772c4c6486767492ec86fd81cae76aa0a841f3153
font_01_sfnt_off0001060c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060C 11152 bytes
SHA-256: b97445a0e559928a2858c684d1dc12aae980fea54cc76847637fb118e0a02789

Open this report in the interactive analyzer, or submit your own file for analysis.