Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48c099570550696…

MALICIOUS

PDF

77.1 KB Created: 2021-02-18 16:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d49a11f6535ef482c5eb4e4e44241a27 SHA-1: db0cb04bbed6bdbf5164b920a366ea661e3310e1 SHA-256: f48c0995705506960c574fad61bf4b0145cc575565cb968b87982de60742adf0
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 0.9998

Heuristics 5

  • 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 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=denon+avr-1000+service+manual PDF link annotation
    • http://usblighter24.site/action_movies_hollywoodaaakn.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/6hazieH/78576588023.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwobevina/hijfJii/gunijujetogofene.pdfIn PDF document text
    • http://timelessdecorum.com/24668517150bx4mv.pdfIn PDF document text
    • http://preplafond.xyz/guzevadodesofobexibiru24yk.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/ghiLqfk/just_dance_now_apple_tv_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/fiaLxSt/color_changing_muk_pokemon_go.pdfIn PDF document text
    • http://prizinsta24.site/91827042771rou83.pdfIn PDF document text
    • http://bestita.space/a_movie_on_netflixwi52t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454825/normal_5fc94d567fb5a.pdfIn PDF document text
    • http://trikolor.site/929802714817d3g5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446790/normal_602e2da2f055e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugofabafomozo.epizy.com/street_fighter_iv_apk_data.pdfIn PDF document text
    • http://vusanaxipunuli.rf.gd/85054377999.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5E 5232 bytes
SHA-256: b2f72acbc9d92e7c5927026045fabb87295eb907444b7820e80354637889e759
font_01_sfnt_off0000fd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2B 12508 bytes
SHA-256: dc6db13a8d55403eeb2a65974fa1de9183aa155a0a1aad2c3681ceaeba4fa6b5

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