Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c90eac224a11458…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 09:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 446534429940293189d39e48b86986a8 SHA-1: e6edce93f6d308e88ae1bbc28dc6943f9b2b8e04 SHA-256: 0c90eac224a11458869c7ca6ab4f7e440c71283ba79587a5e07efa250a2543f3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/123?utm_term=minolta+srt+202+battery PDF link annotation
    • https://cdn.sqhk.co/vekuperik/ibphiKj/52042338370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495037/normal_601ac575e7507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408336/normal_5fe6921de11a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fd1a9b543a8e.pdfIn PDF document text
    • https://cdn.sqhk.co/sufokorume/ie9gcVA/to_the_moon_and_back_luke_bryan_cover.pdfIn PDF document text
    • http://joxetinosutuj.iblogger.org/56546533435.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/dEFKido/facebook_logo_white_vector.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_6033622e67444.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/THTfujg/ribaso.pdfIn PDF document text
    • http://lnstagram-verificationbadgeform.com/destro_warlock_pvp_guide_8._2rmglt.pdfIn PDF document text
    • https://cdn.sqhk.co/bipobulif/2Whjs6P/indoor_waterpark_iowa_city.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491673/normal_5ff49686ee3be.pdfIn PDF document text
    • http://malespw.xyz/muwuxirorizaxafezemura6y0te.pdfIn PDF document text
    • https://cdn.sqhk.co/suzeboxiwo/jicggBu/spiritfarer_characters_locations.pdfIn PDF document text
    • http://zemixubekuj.22web.org/chemistry_a_molecular_approach_fourth_edition.pdfIn PDF document text
    • http://milanbeach.fun/arduino_esp8266_wifi_shield_datasheetpdbpm.pdfIn PDF document text
    • http://rapalafipotofuw.iblogger.org/build_a_wordpress_template_from_scratch.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/cdhcjdA/flight_club_inkster_mi_48141.pdfIn PDF document text
    • https://cdn.sqhk.co/rawavuzom/jhehcid/swamp_thing_tv_show_age_rating.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/1opgeNO/rakuxerenavitokinilibusip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuwewabarabin.epizy.com/belutudidugojurebaxumeziw.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_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 5200 bytes
SHA-256: 638a5178a140fa0ab43fd203bb476c2324631bf6609f214859b8939b430f697d
font_01_sfnt_off0000f22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 10996 bytes
SHA-256: d2143fe1de8c75fc20d212bd8652833d013fb8eb2c008299553fddd2c58e6571

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