Malicious PDF — malware analysis report

Static analysis result for SHA-256 182cc32a87815d23…

MALICIOUS

PDF

66.6 KB Created: 2021-03-04 20:02:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50c6fb8ce4291ab6a7b3f87591dc0334 SHA-1: 971840a1085f0531206d2f7747e8b7688679ff3a SHA-256: 182cc32a87815d23ea640d705a73138c0f5f9e4077206d377483fd98a66b4325
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/award?keyword=turner+super+sidekick+for+sale In PDF document text
    • http://zubiki.top/python_learning_course_free_onlineaatqv.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/the_knight_in_rusty_armor_espaol.pdfIn PDF document text
    • http://tacfitproducts.com/american_formal_shoes_brandsr58l4.pdfIn PDF document text
    • http://mastera-saydinga.ru/converting_between_fractions_decimals_and_percents_worksheetbgxcc.pdfIn PDF document text
    • http://podarokinsta24.online/sopilepunsd4i.pdfIn PDF document text
    • https://futibiwis.weebly.com/uploads/1/3/1/4/131408183/4340681.pdfIn PDF document text
    • http://cucoupon.info/rekaposepadofolijugavimokjn.pdfIn PDF document text
    • https://xulozajewe.weebly.com/uploads/1/3/1/3/131384688/waxiralasaki-muxef-zulazomerilelig-logovuz.pdfIn PDF document text
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/mirufazuju.pdfIn PDF document text
    • http://liberum.sportsontheweb.net/effective_public_relations_practitioners_first.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/best_pellet_stove_inserts_2020.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/how_to_integrate_software.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/81141937-1e7e-4516-b124-e55c691315d5/line_6_floorboard_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1f6a91-a7aa-467d-9962-be6803f9fb4d/william_blake_poem_the_sick_rose_summary.pdfIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_77f069dd89424a59ba5d00305a512906.pdf?index=trueIn PDF document text
    • https://c8f6a2ed-bc8a-4fd4-b26a-19707db7c4cd.filesusr.com/ugd/1cc7e8_91e314e588464294bf24044c0e64704f.pdf?index=trueIn 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_off0000c8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C9 5160 bytes
SHA-256: 33ac7b49b8a9b5bf5d4d1c95afdc60b4be8c77045f5633768f599888e10aef6a
font_01_sfnt_off0000da6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6B 10308 bytes
SHA-256: 0f2ce0e4a9373790af8b0b5a9df3209c9b47d32ca3ced54d0d88bb845bdb73dc