Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d151fea3928016f…

MALICIOUS

PDF

46.0 KB Created: 2020-10-03 22:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c3cd0835625da8097fbb123a7b47d71d SHA-1: ef785f427b831fcbd2cb9e28f87a74d557eea252 SHA-256: 9d151fea3928016f5aafcf4938cb022bb77b800bbb7d0031fd7d56f34c926b17
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/strik?keyword=cazadores+de+sombras+libro+1 In PDF document text
    • http://jevoxiji.manateeconcertband.org/uploads/1/3/1/3/131398027/1614652.pdfIn PDF document text
    • http://files.khaagwa.org/uploads/1/3/1/6/131637056/1681961.pdfIn PDF document text
    • http://files.dontbeacrashtestdummy.com/uploads/1/3/1/0/131070366/xafigot-radexoba-tulizujasaf.pdfIn PDF document text
    • http://musopok.svsoar.org/uploads/1/3/1/4/131483112/rozeru-verujumufiduwu.pdfIn PDF document text
    • https://site-1038548.mozfiles.com/files/1038548/21122754433.pdfIn PDF document text
    • https://site-1040767.mozfiles.com/files/1040767/ruwigemebogebejewomosipog.pdfIn PDF document text
    • https://site-1039268.mozfiles.com/files/1039268/22093932102.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/64285024793.pdfIn PDF document text
    • http://files.freedominmotionat.com/uploads/1/3/2/6/132681062/vowat.pdfIn PDF document text
    • http://pozumu.vikkifieldsartist.com/uploads/1/3/1/3/131383646/3078793.pdfIn PDF document text
    • http://xibemog.raynayler.net/uploads/1/3/1/6/131606165/jatasakitufivi_ralenudafewof_matinug.pdfIn PDF document text
    • http://jezuvuzi.peoriaradon.com/uploads/1/3/1/4/131437601/3555678.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8829/7630/files/a_credit_balance_in_cash_over_and_short_is_reported_as_an.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8018/files/44697211891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/in_the_time_of_the_butterflies_summary_chapter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3051/4330/files/talawanda_school_district_treasurer.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C5 5120 bytes
SHA-256: 44b8fa46ef6d0aae67f79bf408ddc2821366269f4a0307beaaad89e537583909
font_01_sfnt_off00008519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8519 11264 bytes
SHA-256: 534509a75b5679dcbf17e39ff6b33c8ecd44f65174fd136454be83773d2f16fa

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