Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac462463535ead88…

MALICIOUS

PDF

88.9 KB Created: 2021-03-28 04:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5f689e12a8e9072a0175a28963f70bbc SHA-1: 723f19c775744b5976a8d4c80943f595c4b011b1 SHA-256: ac462463535ead887de686042b4438eaefbc64b787672abf94be9366f2d533f1
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to disposable hosting services, indicating a link farm designed to manipulate search engine results. The primary URL, 'https://baarspo.ru/award?keyword=filmfare+awards+2020+winners+list+pdf', is presented as a lure to trick users into visiting a potentially malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://baarspo.ru/award?keyword=filmfare+awards+2020+winners+list+pdf PDF link annotation
    • https://bunupujitoj.weebly.com/uploads/1/3/4/0/134017728/4f3651.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/44W3jeQ/19210962180.pdfIn PDF document text
    • https://nojasiputijaze.weebly.com/uploads/1/3/4/8/134869787/deef4d730ac36.pdfIn PDF document text
    • https://bulejufinekefek.weebly.com/uploads/1/3/4/6/134643919/redirabupagid.pdfIn PDF document text
    • https://jirewolekaza.weebly.com/uploads/1/3/4/3/134387643/1a83c435.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/IhhHiel/12090217339.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/9hhghfn/gogokitamuvefiluz.pdfIn PDF document text
    • https://cdn.sqhk.co/wukatigubo/jicoidI/bubble_shooter_with_friends_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimurami/nMU2iar/muramuzikikedafafowojajew.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/2oLNjej/grand_crime_gangsta_vice_miami_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/milimewaj/hgfJid1/ice_princess_lily_full_movie_free.pdfIn PDF document text
    • https://fevawitag.weebly.com/uploads/1/3/2/6/132695646/2a146.pdfIn PDF document text
    • https://zunaxezosepoto.weebly.com/uploads/1/3/0/7/130739564/2876164.pdfIn PDF document text
    • https://lopazilavorelid.weebly.com/uploads/1/3/4/0/134097689/mawelakabitus.pdfIn PDF document text
    • https://galafibokuwi.weebly.com/uploads/1/3/4/8/134868726/4197662.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/MgdbgjW/fawigexojawojunilepetipa.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/seriposuj/mcgraw_hill_connect_answers_macroeconomics.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/novipiwaxuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/rulefadasemupejozuwevasa.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/34484066881.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/shark_navigator_lift_away_deluxe_nv70.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_off00011b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B00 5508 bytes
SHA-256: 13fdf28fdecd8e90135e30c9747b941d42453929146c0af0e4724fb8fc13ac78
font_01_sfnt_off00012db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB6 12200 bytes
SHA-256: a2e25e257fd01c10538c77fb0b95fc21cdfba994c04b0a0638562d72858ed592

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