Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1e578b1ec80816…

MALICIOUS

PDF

45.5 KB Created: 2020-10-15 11:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ddbac39bdbe97c2c6f0822681e881499 SHA-1: 588a46e78a56f620fae828e4f82e855ae1ce6732 SHA-256: 2c1e578b1ec8081608ad221a47ff5ea7c4f2ecab15b26b11b017ca95f448ad4b
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=pacific+rim+2+imdb+parents+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f877f291feba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f8700afea0cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f8773d2514a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5f87fca3f2852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8723c2e400a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f876061a7cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f87ce2e7a56c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f87ddc85228a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f8737e1e0dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8720993973e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f879a2ecf18c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f87679d1687f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f871ce18be0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f873e69555f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f87bdf481a49.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8347111.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.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/1/0497/1557/6993/files/ford_lightning_for_sale_in_texas_craigslist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5135/9642/files/48862116427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/download_game_bully_lite_apkdata_obb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/8254278183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/30072430803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/plants_vs_zombies_mod_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6153/8727/files/52579786467.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_off0000719e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719E 5716 bytes
SHA-256: f239e53c444db0eba8784fbdd0d6388e0ed05bb62d95a7a2ec596ecc1b03c743
font_01_sfnt_off000084f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F4 10516 bytes
SHA-256: d176fc06855a7e37dd496c1cde36ca0879ac8c881a0229593097d52b279ba923