Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5828379b39c8b2…

MALICIOUS

PDF

78.2 KB Created: 2021-01-20 12:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0c67c23ed56c6e723f51ed4a34cbdd11 SHA-1: cd1c88f93280e2d9f92c73952387bfdd4bdcaf17 SHA-256: 7b5828379b39c8b2afb7ab698521244c55ff2c23f8cc84b927c380ccaf0105ed
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=garfield+1+tamil+movie+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464852/normal_5fb527c13f3a1.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/DibKlRv/19034997548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f874afcc3f00.pdfIn PDF document text
    • https://cdn.sqhk.co/pufojoloz/Sa6Chj2/mafotokovenuziparave.pdfIn PDF document text
    • https://cdn.sqhk.co/gobikazifelo/ZtF7Iqp/all_secret_codes_for_rocket_league.pdfIn PDF document text
    • https://tujurexi.weebly.com/uploads/1/3/4/7/134743655/godidukopavufudutag.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/ijibetT/55842621767.pdfIn PDF document text
    • https://cdn.sqhk.co/puburasar/jihdJjd/sims_freeplay_vip_mod.pdfIn PDF document text
    • https://tuxipowu.weebly.com/uploads/1/3/4/6/134699968/1356243.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/p0Rgeji/sexuzafeza.pdfIn PDF document text
    • https://cdn.sqhk.co/wezikinupig/i7XnKia/rust_basic_survival_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/aROhglX/hymns_of_praise_and_thanksgiving_with_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/vivupedasez/jePRgh7/71846691464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fd2d18367d05.pdfIn PDF document text
    • https://zabodoxukuxubar.weebly.com/uploads/1/3/4/9/134904472/6433131.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36B 5020 bytes
SHA-256: a26f7a9d54a85c94063db19d6d936e8de3a836032945e6037293426202ab3a1a
font_01_sfnt_off00010476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10476 11540 bytes
SHA-256: 26c33223db920c4f0e2ccf1233ce6d07ed43569f78eb4549dd3a86f5ffda37d0