Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae6a51a69745c87…

MALICIOUS

PDF

49.5 KB Created: 2020-10-27 00:20:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7fa38cf43fbe03b819d07db42658242e SHA-1: f53bdfdd5cdaf47279753205034ac02e0ca83acf SHA-256: 9ae6a51a69745c8742c9ae1b1610f831472076c9c4c8eba3846134379bc20e58
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://cctraff.ru/123?keyword=approaching+literature+4th+edition+pdf In PDF document text
    • https://powizosiki.weebly.com/uploads/1/3/4/0/134041047/seligu.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/3703292.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/5521689.pdfIn PDF document text
    • https://zufugorutamivas.weebly.com/uploads/1/3/4/4/134401118/wubujamo.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jedurelutakivaj_xofekuvez_rigufufovu.pdfIn PDF document text
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/pukefexaruwage_radul.pdfIn PDF document text
    • https://gixejeti.weebly.com/uploads/1/3/4/3/134326891/6971071.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/ratitetosafemo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007f55.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007f55.bin)
    • https://cdn.shopify.com/s/files/1/0504/4083/1155/files/69031899856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5277/6603/files/judisunegoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4816/0411/files/vudupajowugapos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3343696-4342-438e-8597-dce3aaf0e2fc/how_to_recover_gold_from_scrap_computer_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4813b7e1-73e3-4e9c-80d7-43eb46e7483e/zagejepetemapawovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6202791-b305-49c6-b161-8e362f23ec7e/sixaxis_pair_tool_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f19ac06-9abc-48cd-8d07-9f54b41c7c52/93711580822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867bd3fd-e7bd-4b0b-a957-0aaaba55ea4f/ruzesotagabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/38598215604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4721/5000/files/kasud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0613/8787/files/download_game_mod_apk_ghost_battle_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/naxomu.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 extracted file (font_00_sfnt_off00007f55.bin)

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_off00007f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 5316 bytes
SHA-256: 3018153db4db16f597309840979517dc81039051d4901a5bbd2b9d8289822e13
font_01_sfnt_off00009164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9164 12024 bytes
SHA-256: e841cf9abfe126b432f66804b77aa5f25628fd4e6f785d4469cc5528423c5d97

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