Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a9d430a03521de…

MALICIOUS

PDF

83.0 KB Created: 2021-02-23 05:08:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5a54611eaac9bb041775a6c35740cf7d SHA-1: 5e6b92191ff7d2acb68cdd1779a0278667b54ff9 SHA-256: 98a9d430a03521de33e95ce2b556491dddf2bb1000473c6c76c20b6237bc424b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a site offering movie downloads, suggesting a lure for users seeking pirated content. The PDF's structure and embedded links indicate it's designed to redirect users to potentially malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=twilight+2008+full+movie+in+hindi+download+480p+openload PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499995/normal_6022cd0324766.pdfIn PDF document text
    • http://reestr.site/king_size_sheets_measurements_in_cm6w7jx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_5fdc24891546a.pdfIn PDF document text
    • http://hiziryigit.online/hp_envy_4500_problem_solvingqo9ab.pdfIn PDF document text
    • http://ryukzak.digital/ray_dalio_economic_principlesu84d4.pdfIn PDF document text
    • http://mexicotop3.xyz/72282009642silr9.pdfIn PDF document text
    • http://foxareb.22web.org/burial_rites_hannah_kent.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_602b036529760.pdfIn PDF document text
    • http://madamzero.com/derotuzanop97i7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493876/normal_5fe3dd01526c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495681/normal_5fe1949e62a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423752/normal_6024302213211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_601dc9c703074.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://rojepubaxogo.epizy.com/57703654152.pdfIn PDF document text
    • http://kaxoxosav.rf.gd/sun_and_light_bulb_emoji_answer.pdfIn PDF document text
    • http://rizizevifixelu.epizy.com/bmw_n54_auto_vs_manual.pdfIn PDF document text
    • http://duxejuxaxeze.epizy.com/surah_yaseen_in_english_text.pdfIn PDF document text
    • http://somesituziki.epizy.com/85942500097.pdfIn PDF document text
    • http://fozilixugijuva.epizy.com/how_to_pair_plantronics_voyager_focus.pdfIn PDF document text
    • http://togipumenotu.epizy.com/78082089553.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000f5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DA 5720 bytes
SHA-256: c7611b38460c9c0611c683d13e82bb2bb11eb0dc7f621172b60fd1ef3c477665
font_02_sfnt_off0001094b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094B 10672 bytes
SHA-256: e07b9521ed738067a566b766879f44c81096fd02632812d020fd6e7f66bd1439
font_03_sfnt_off00012dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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