Malicious PDF — malware analysis report

Static analysis result for SHA-256 1349d167aeaee5e9…

MALICIOUS

PDF

72.9 KB Created: 2021-02-28 08:33:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 667a21a7ad0f27fa103ffbbf9748cc8a SHA-1: 69ef3bdad14cffc6436fdd9e2ce28c0e7a2c9704 SHA-256: 1349d167aeaee5e93995dbdc49cb19d6b8706c0a7d70987452ebdd4024a0b9ec
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://bologen.ru/wix?keyword=garmin+vivomove+hr+size+guide PDF link annotation
    • http://dosaxixapaxa.medianewsonline.com/76877946015.pdfIn PDF document text
    • https://cdn.sqhk.co/zitedefew/g7gdhaV/mapisewosujamed.pdfIn PDF document text
    • https://nugekiva.weebly.com/uploads/1/3/5/3/135322430/2977269.pdfIn PDF document text
    • https://cdn.sqhk.co/gogefaman/eH30Ny5/81770947602.pdfIn PDF document text
    • https://letavozogat.weebly.com/uploads/1/3/5/9/135978758/8708617.pdfIn PDF document text
    • https://cdn.sqhk.co/fukafodifi/gfdibij/jodofoligiladewovabu.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/hflShcC/62308283581.pdfIn PDF document text
    • https://cdn.sqhk.co/lowimipofevu/hZu3Cjj/fuzoduxilaverixine.pdfIn PDF document text
    • https://cdn.sqhk.co/zopizote/XjflQt3/little_alchemist_2_how_to_make_life.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/jbjjicP/zakebosurufodujewonujoxe.pdfIn PDF document text
    • https://pebenari.weebly.com/uploads/1/3/4/5/134518206/5941924.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xetoluwe.epizy.com/bagogakijoragabijo.pdfIn PDF document text
    • http://zotubune.myartsonline.com/adobe_audition_cc_midi_keyboard.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_off0000df09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF09 5348 bytes
SHA-256: df196c2e43cf284d9d9b0c1bab3c49e3c172eace349d3e15471ce2c6d3bde8e0
font_01_sfnt_off0000f11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11D 11100 bytes
SHA-256: 36336a5de995ff3da50e728a72b049560cd80024ff0fdbc6d5fdf3d3dcc91ab0