Malicious PDF — malware analysis report

Static analysis result for SHA-256 322e5752ad0332cc…

MALICIOUS

PDF

70.7 KB Created: 2021-02-18 20:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 12e7e7bebba0914212cf66223d24927c SHA-1: 12a3ac9abb75e4461a5219eb489f2459b19f027b SHA-256: 322e5752ad0332ccf745dbb2985d10d50ea90d1d88c6147eb560df432febdf67
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/123?utm_term=odd+couple+tv+show+theme+song+lyrics PDF link annotation
    • https://regasefes.weebly.com/uploads/1/3/1/8/131871592/afd10cf1e2e5.pdfIn PDF document text
    • https://cdn.sqhk.co/perajomipe/Z8hauGj/dhoom_4_release_date_confirmed.pdfIn PDF document text
    • http://pizidojokinesa.66ghz.com/gurofobitatavovok.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/Bfgdghs/sniper_3d_gun_shooting_game_apk_download.pdfIn PDF document text
    • https://wumigativagulam.weebly.com/uploads/1/3/1/6/131637174/guvonukevapu.pdfIn PDF document text
    • http://losiruwu.66ghz.com/football_drills_for_6-7_year_olds.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/PheqibG/newspaper_advertising_agency_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidakofonol.epizy.com/helplessly_by_tatiana_song.pdfIn PDF document text
    • http://xupewosupegosax.epizy.com/81334834342.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/wozagajudaf.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/adenoma_de_hipofisis_sintomas.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/robert_half_online_time_reporting_login.pdfIn PDF document text
    • http://vagafalim.rf.gd/3092758412.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/ragibovevu.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/best_weather_app_android_2018.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_off0000d5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 5560 bytes
SHA-256: 294f1a8f91e4c6b43994ea15580a2cac7d4259ac494fe21dab266307be24ed98
font_01_sfnt_off0000e8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C9 11000 bytes
SHA-256: 48e21658250069d82a6d02d0c590588b10508db1c156ff513fe17b187e64ab6d