Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ab6d251d4aa614…

MALICIOUS

PDF

70.7 KB Created: 2021-02-14 22:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 21b51e645ce0b85c0c36ab9f8183d12b SHA-1: 928c9e6001b2be750fa16f8586100ee3b250843b SHA-256: d4ab6d251d4aa61414b5c974cabdcc83390a8a58058eb9be04e8727599d54400
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://baarspo.ru/wb?keyword=pardesi%20anthem%20video%20song%20%201080p PDF link annotation
    • https://finiluxib.weebly.com/uploads/1/3/5/3/135350298/segidave_tezimiwasugotez.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/09fab.pdfIn PDF document text
    • https://vaturelola.weebly.com/uploads/1/3/4/7/134704713/mafelokunuparurob.pdfIn PDF document text
    • https://vunozeguwogiwe.weebly.com/uploads/1/3/4/7/134745761/fitavefonu.pdfIn PDF document text
    • https://vajalumodo.weebly.com/uploads/1/3/4/3/134390135/xuman-zoduwev.pdfIn PDF document text
    • https://kaxaxelakag.weebly.com/uploads/1/3/4/2/134235500/dunudezevesajoguv.pdfIn PDF document text
    • https://vosaxivuminol.weebly.com/uploads/1/3/4/3/134387598/b9a1541e.pdfIn PDF document text
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/zokalipajoga-miwexed.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/5169433.pdfIn PDF document text
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/59e9838a232a3.pdfIn PDF document text
    • https://dinuboxisoxim.weebly.com/uploads/1/3/1/8/131857966/ganevobof-xaweziwiso-saxus.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/feduta.pdfIn PDF document text
    • https://cdn.sqhk.co/situdejoj/37jdChi/puffin_web_browser_pro.pdfIn PDF document text
    • https://riviruzo.weebly.com/uploads/1/3/0/7/130739493/a8a24.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/vizegemawokaxe/35852847728.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/lateral_thinking_word_puzzles_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/android_17_phy_dokkan_battle.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/icar_net_2019_notification.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_off0000d459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD459 5792 bytes
SHA-256: bb5e410cb531121f3badd074de2634ad4f771198413d6c48378a343ac7c32fc5
font_01_sfnt_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 11140 bytes
SHA-256: 50006f5db5e1bfd0615dedfb5c34d011adb31b79bacc89b95996d7d9891cd37e

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