Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c3c860b956d46a…

MALICIOUS

PDF

71.0 KB Created: 2021-01-29 14:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 56d65cf3026362b882a864488fce5f4d SHA-1: 685dfbe6d9cd42a0d4f6d4502a8389b67ec6779c SHA-256: 22c3c860b956d46a0db35c594e72005427ac26c6b298df12c59ad96a11eac2ed
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/shook?utm_term=business+management+classes+in+high+school In PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/runuvexeka_lijajivivu.pdfIn PDF document text
    • http://koolmaxt.online/zombie_evil_mod_apk_free_download40xud.pdfIn PDF document text
    • https://lokesikaneweb.weebly.com/uploads/1/3/1/4/131437695/xijofebe_barivokamef.pdfIn PDF document text
    • http://sethel.xyz/all_the_fun_of_the_fair_sayingaec8i.pdfIn PDF document text
    • http://mon-cmb.best/70433576586eys55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478926/normal_5ffbcd65d227a.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/femud_papevisazajuvo_posax_faleperavu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5fc9eb8a9f05d.pdfIn PDF document text
    • http://psychologyrelax.xyz/260062948057qfcz.pdfIn PDF document text
    • https://wigadanoj.weebly.com/uploads/1/3/4/4/134404864/biketafumo_dijunapejiloxi.pdfIn PDF document text
    • https://cdn.sqhk.co/puwupasakej/ggrjcIi/41812769680.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404287/normal_5ff2d39d1ba5c.pdfIn PDF document text
    • https://nikulagoronol.weebly.com/uploads/1/3/2/3/132303117/af7c83b50.pdfIn PDF document text
    • https://monezoxikaxusoj.weebly.com/uploads/1/3/1/4/131453753/4865352.pdfIn PDF document text
    • http://espaceabonne.com/gamers_wallpaper_for_pcr2ob4.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/fibUVjb/77283771444.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/sjghaii/luxury_daily_deals._shopping_app_brands_stores._com.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/ding_dong_music_lyricsa0fs1.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_off0000d98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98B 5164 bytes
SHA-256: ee1590cadde0b9d4834a684611bb23e261a2b613f30ec6214763d0636e79e507
font_01_sfnt_off0000eaf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF6 10464 bytes
SHA-256: ee449f91a049b06c223dbb47d135d91df1aab15e61c5fcc9ffecd008737a02ab