Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6f1ca1a64b37ae…

MALICIOUS

PDF

45.0 KB Created: 2020-10-01 22:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 49042ca1e74f424597c006249783344a SHA-1: 6a0adc0208f5579c959b4e4d67bf70e3dce096a4 SHA-256: bd6f1ca1a64b37ae3da7ff6a8f401c8f359964377a76fe7c0a2bb1194777ceaa
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=icloud+unlocker+software In PDF document text
    • http://files.modestoslamnjam.com/uploads/1/3/1/4/131453870/2599557.pdfIn PDF document text
    • http://files.lahainalunaptsa.org/uploads/1/3/2/6/132696077/pemajuwijiwu-nupadoremigodef-xepar-lexogizosege.pdfIn PDF document text
    • http://files.businessmanagementib.com/uploads/1/3/0/7/130738949/18d4f1cfd8b124b.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://uploads.strikinglycdn.com/files/3ac1b7ca-f691-42b4-8ced-021b17751361/sibagobilaseduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ff5af3-c323-441f-b8f1-5ea8b2da2371/rinaduwurige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff3937f-22d5-4ae1-91e9-0612cf9e4b98/biduxazeparupopig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2998/2115/files/flow_weighted_average_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2551/7722/files/semovedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0683/9962/files/80899657039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7902/3257/files/85884135454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3498/8703/files/99119371924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5553/7064/files/tungsten_guide_rod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4253/2247/files/download_colecovision_rom_set.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/all_but_my_life_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/tableau_server_administrator_vs_site_administrator.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 3

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_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 4940 bytes
SHA-256: 47c53928ef14c2519278cf39748920b3c337cb50437f6cec8edd8c42171de7e6
font_01_sfnt_off0000771c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 9988 bytes
SHA-256: 95bb377f75448a6f0d1de92b27d1310f0c321d30191379e1ef9c7b9b4289a77d
font_02_sfnt_off00009969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9969 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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