Malicious PDF — malware analysis report

Static analysis result for SHA-256 6adf4db847d11242…

MALICIOUS

PDF

71.2 KB Created: 2021-03-01 15:47:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b9e69a053ece6444a9184189231e169a SHA-1: 1f88c7afa2fc562cb1a2eeab90976477970664a7 SHA-256: 6adf4db847d11242735b592bd89adbcc250c28bfa73c63ce9eda0e7d4a3c540f
196 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.
  • 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://fokemale.ru/aws?utm_term=what+is+the+beautiful+creatures+series+about PDF link annotation
    • https://xalekosud.weebly.com/uploads/1/3/5/3/135350534/vetikoma-xojofunida-sapat.pdfIn PDF document text
    • https://lugelobixo.weebly.com/uploads/1/3/6/0/136095506/dixujeme.pdfIn PDF document text
    • http://mishabelle.ru/guns_and_spurs_2_mod_apk_downloaduev3f.pdfIn PDF document text
    • https://riwumoba.weebly.com/uploads/1/3/5/9/135965326/towax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470960/normal_6002addb2b8ed.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/jiih5EX/spirit_run_multiplayer_battle_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/bmidjfc/73166844294.pdfIn PDF document text
    • https://nebowepef.weebly.com/uploads/1/3/4/4/134483035/5762048.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/hibWihq/measure_of_supplementary_angles_calculator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/bushnell_flashlight_20511_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/restaurant_catering_menu_template.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/tegikiseve.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/sizujo.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/rengar_guide_9._20.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/3070389472.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_off0000d701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD701 5124 bytes
SHA-256: 9fb2e82297aa82831d6d2feb8567b1bdaa9e04d91ee69b33b9d60804f9b4d668
font_01_sfnt_off0000e874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 11616 bytes
SHA-256: f6680c0b5fccabfdafe9155a5e18063254e55fddda4f698cf8dc668fbb08b14f