Malicious PDF — malware analysis report

Static analysis result for SHA-256 281045d7b6c22f5e…

MALICIOUS

PDF

71.8 KB Created: 2021-02-11 20:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d9970a2ecbc81f8907b97b77ebf43d62 SHA-1: 7b7f3722905c223a369eedd129f33a9b101aa819 SHA-256: 281045d7b6c22f5e41fa9c248e92acbd1c24c227f15f575d3dec464b2d543c30
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/wix?keyword=need+for+speed+most+wanted+apk+android+7.0 PDF link annotation
    • https://cdn.sqhk.co/lewiwifo/gcZEijG/free_outdoor_water_parks_near_me.pdfIn PDF document text
    • http://leomannapov.com/surgical_recall_8th_edition_downdo28f.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/mjev4ge/8412805116.pdfIn PDF document text
    • https://tofariviviri.weebly.com/uploads/1/3/4/1/134109347/wukosuzul.pdfIn PDF document text
    • https://bajigexok.weebly.com/uploads/1/3/4/1/134131467/vonujovalirilexa.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/saperif.pdfIn PDF document text
    • http://tihefers.online/39093436064j0slp.pdfIn PDF document text
    • https://miwimuwal.weebly.com/uploads/1/3/0/7/130775744/rigoponoza_wosopedoko_kexoviv_bonepoxenew.pdfIn PDF document text
    • http://pr-bux.online/adobe_audition_free_offline3d8lm.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/3sypXdW/car_driving_simulator_game_download.pdfIn PDF document text
    • http://operationhomeplate.com/76592334048wqphg.pdfIn PDF document text
    • https://cdn.sqhk.co/ketusugedi/RihkjdR/2004_subaru_forester_off_road_build.pdfIn PDF document text
    • http://copyright-securityx.com/57855273921a3j2w.pdfIn PDF document text
    • http://mignonette.space/fitovefuf5nog4.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/asphalt_8_airborne_mod_highly_compressedhbns8.pdfIn PDF document text
    • https://rawubewo.weebly.com/uploads/1/3/1/4/131405976/8447507.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/jUUibXu/47361623055.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDF 5536 bytes
SHA-256: 49c5336539aa005e809524554bac651a90c669d8559ad1048b5bdf61f29cf8ab
font_01_sfnt_off0000efc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC5 10092 bytes
SHA-256: 4c929496ba11152edc8b1c5157085bba69c30e8c624a82baf1e30937b761d6b5

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