Malicious PDF — malware analysis report

Static analysis result for SHA-256 935aa48a39158df1…

MALICIOUS

PDF

65.7 KB Created: 2021-02-04 12:37:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f291e4c00a05ece928d562cf969a36ba SHA-1: e6e7a4f28b1410e8aa2db5f2e21f2456dac8046d SHA-256: 935aa48a39158df10b7ada5bca2e145aebd3cf3b11453a313b4c8fcea6e9a3f8
136 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
  • 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://bologen.ru/aws?utm_term=asmaul+husna+pdf+khassida PDF link annotation
    • https://cdn.sqhk.co/dokukavifig/jgjePqU/34062420611.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/xorunug_jexexut_fipiremamekixiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372072/normal_5ff90a36aab57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424011/normal_5fe3af0d658d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5fe458f241132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482407/normal_5fe9e4d6ef4d6.pdfIn PDF document text
    • https://makirogu.weebly.com/uploads/1/3/0/9/130969002/1183477.pdfIn PDF document text
    • http://pupijepu.22web.org/business_plan_bookshop.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/92b9e256785824e.pdfIn PDF document text
    • https://dulupuwo.weebly.com/uploads/1/3/5/3/135393712/kinex_finojolaletovo_kasarujujevazi_lilibimibid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487399/normal_60127c968b566.pdfIn PDF document text
    • http://rirenanevigi.22web.org/l4d2_weapons_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419857/normal_5feb5c8ec86e7.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/zinudipir/82480343390.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/canon_600d_manual_video_exposure.pdfIn PDF document text
    • http://lafugigolemetuk.rf.gd/92478810324.pdfIn PDF document text
    • http://gojejamajutemus.epizy.com/birthday_invitation_card_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/xufusot.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_off0000c327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC327 5236 bytes
SHA-256: 3226bc127f1c9b1a77768a1bf25c8e6040c53961760c55ced88a1fdce12b96de
font_01_sfnt_off0000d4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D4 11256 bytes
SHA-256: aef93094a90964b72544a2604825edb24912045f12990beba8a67312c8b9f765