Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f404b76a650c86…

MALICIOUS

PDF

81.7 KB Created: 2021-04-17 19:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: bbfa763361f674eb0590d8f4b81f1d69 SHA-1: d4d6b46127a38bc2c42c272411c7059548bd24a4 SHA-256: 69f404b76a650c86022634e7826bd658d739b263feb696d05b0a5dbb5d0b79cd
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary malicious URL identified. Heuristics indicate it functions as a link farm hosted on disposable domains, a common tactic for distributing malware or phishing content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/strik?utm_term=lemony+snicket+who+could+that+be+at+this+hour+audiobook PDF link annotation
    • https://cdn.sqhk.co/parikozug/8ggFpvw/89483123967.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/JigJhHL/space_heater_walmart_price.pdfIn PDF document text
    • https://cdn.sqhk.co/losegiro/jja3iba/32000181685.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/gjjidY0/earn_to_die_part_4_hacked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445733/normal_5fca21febe633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500417/normal_6054be0c03d46.pdfIn PDF document text
    • https://cdn.sqhk.co/pidikuso/hjribcu/67280748316.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/iWfYhge/aesthetic_wallpapers_blue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386095/normal_601e56ea920ee.pdfIn PDF document text
    • http://watizizilumu.22web.org/chuyn_thnh_hnh_nh.pdfIn PDF document text
    • https://cdn.sqhk.co/xogutozo/hhhf4jG/rpg_dice_games_online.pdfIn PDF document text
    • http://xunajoza.22web.org/88554239004.pdfIn PDF document text
    • http://tefulen.iblogger.org/54947694697.pdfIn PDF document text
    • https://cdn.sqhk.co/ridijafugemi/jaicEib/pazekupovumowupo.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/jiyhitT/mebixefatitogaramoxoper.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
    • https://s3.amazonaws.com/lososimap/bupomubebasijanuror.pdfIn PDF document text
    • http://dereduvate.epizy.com/fishman_loudbox_mini_charge_used.pdfIn PDF document text
    • http://kojajopi.epizy.com/carrom_live_3d_game.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/jizexililixud.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/50603873190.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/72289025742.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/tomivomuwuzugezadosaji.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_off0000f3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AF 5400 bytes
SHA-256: 1f972ca0e6cd977cf2c1650cbafa64547884edec237eccd7e7d041c9e6af9b46
font_01_sfnt_off000105f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F3 10836 bytes
SHA-256: 7d403c05a57a0d9dc193bbf69a575aeb51816ade26d25a4cc1ab4ae3e738190d
font_02_sfnt_off00012afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AFC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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