Malicious PDF — malware analysis report

Static analysis result for SHA-256 0459f8fd3d7a9ed0…

MALICIOUS

PDF

63.6 KB Created: 2021-03-03 15:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a80126a6183f3779e1711ab6b1305ecf SHA-1: 4ee1bb0092fe7fe173ce09c17571dc356574ce61 SHA-256: 0459f8fd3d7a9ed04f9e731aee70bcf4b811fbe2aac4526d9c9314e85a6745d1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://crophysi.ru/award?keyword=dixie+chopper+x2503+parts+diagram In PDF document text
    • https://cdn.sqhk.co/pigexebobe/jhIgrig/xomawikafaxokinanam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_603e58fe16ab7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5fee96bc3b094.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/hjhfy3s/ball_gun_toy_buy.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/bejenosugede/14808467364.pdfIn PDF document text
    • http://tuguwobafadurot.rf.gd/86878039510.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/who_sells_leggett_and_platt_adjustable_beds.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/85152533383.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/42832779368.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/que_tipo_de_procesos_termodinamicos_hay.pdfIn PDF document text
    • http://sexikajizetux.rf.gd/does_walgreens_have_fedex_boxes.pdfIn PDF document text
    • http://rugogevegemup.rf.gd/31684479514.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/kafeginolafumelovoxisuge.pdfIn PDF document text
    • http://gizenelik.rf.gd/private_pesticide_applicator_test_answers_illinois.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_off0000bb96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB96 6084 bytes
SHA-256: 8081daf1c7bc80fdaaf4724f5f70a083602833b5d5295f6ac4fc251873c9c59b
font_01_sfnt_off0000d02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02A 9880 bytes
SHA-256: 32b9737e7661884997e2aed90ff0323949003a08183f4cd403759673e05ee411