Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4b03e7cc63ff39…

MALICIOUS

PDF

44.6 KB Created: 2020-10-10 21:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7f5ba768501a2480486c01c7de82d77c SHA-1: 683f4f8122fc1a94090375f3e9d33c773ee817d2 SHA-256: 1f4b03e7cc63ff39680e5087fc7d6d8182edf61bf0979d159d8a96790c0f9a19
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/strik?keyword=voice+live+2+manual In PDF document text
    • http://rokubap.webster-farms.com/uploads/1/3/1/6/131606227/067390132e11ba.pdfIn PDF document text
    • http://zejelojor.simplespacestwincities.com/uploads/1/3/1/4/131454065/f31179e5efced28.pdfIn PDF document text
    • http://files.wsearcare.co.uk/uploads/1/3/0/7/130738921/409310.pdfIn PDF document text
    • http://folobaze.pioneervalleykennelclub.com/uploads/1/3/0/7/130740145/9d48d.pdfIn PDF document text
    • https://site-1040092.mozfiles.com/files/1040092/godimov.pdfIn PDF document text
    • https://site-1039725.mozfiles.com/files/1039725/jufatatekenonovodaxovo.pdfIn PDF document text
    • https://site-1036869.mozfiles.com/files/1036869/rakan.pdfIn PDF document text
    • https://site-1042671.mozfiles.com/files/1042671/37568742208.pdfIn PDF document text
    • https://site-1044103.mozfiles.com/files/1044103/45648805868.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6952/5154/files/26581052750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1194/7926/files/parallel_and_perpendicular_lines_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5284/6234/files/dead_samurai_hacked_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9302/3638/files/16455832409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0513/6024/files/41010494749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/big_latex_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6703/2998/files/remington_721_serial_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3325/9943/files/myth_of_sisyphus_camus_read_online.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 4632 bytes
SHA-256: 6ddd3c750a108c32fbd5ca77eb6672b7afb0645833f5e76e736e1d0a3b314bbc
font_01_sfnt_off000074e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E6 10048 bytes
SHA-256: 24fcb5c04e2425d9e808c49f37498dbe41ee0c616c0d5e0582841993a9851077
font_02_sfnt_off0000974b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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