Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a64602dbea3181…

MALICIOUS

PDF

39.2 KB Created: 2020-09-29 20:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a61e7660f60bfe90a0a9d3feb47a211a SHA-1: 7e718b908671c16836b91b37080220804326dd1a SHA-256: 93a64602dbea318109dc6bf46157def380eb9cb6e7232c2435f714590b3eb0c1
184 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.
  • 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://gettraff.ru/strik?keyword=pirates+of+the+caribbean+full+score+sheet+music+pdf In PDF document text
    • http://tavotevon.plkpbsd.org/uploads/1/3/0/7/130740178/9958124.pdfIn PDF document text
    • http://sogivab.metalwitchh.com/uploads/1/3/0/7/130740073/c2d006.pdfIn PDF document text
    • http://files.watchyourhead.ca/uploads/1/3/1/1/131164174/1916354.pdfIn PDF document text
    • http://files.macymariehernandez.com/uploads/1/3/1/4/131407061/babdfb0a67f3662.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/kunosu.pdfIn PDF document text
    • https://site-1036826.mozfiles.com/files/1036826/30274189553.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/76444216274.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/fokabatojifim.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/3b9d70e5-7c8a-4110-b967-e82f6cf8a0a1/22024861667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70916f35-332b-4ab4-a8eb-142a2adaace4/tuwejubimepidow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec9d2a6-5e3f-4612-8087-9d3c38841aee/pabilofemipudanoduzetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69c04699-50ce-4906-b542-e242b7dbcb2a/gifajupobetus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd5f9b41-8cbb-4540-97e2-49bcdd8374a5/39478348800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ade8d0f-5bcd-4956-95e8-256220ad4238/nulutaleve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/688000e9-fd41-4383-aa4b-bfa6fce5385f/fesivopigupixitifeliwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2165415-a22b-4f60-b230-b7583274fd78/suviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/215e75f5-504c-4248-be7a-81dc404c125b/pekete.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CD 5536 bytes
SHA-256: c9048114a15bf63c50555a96ca335092ab363d1851bdfc041b4bb00c06a3a54a
font_01_sfnt_off00006b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6A 10752 bytes
SHA-256: e83b420c53dbbe4dd6c60d1ab8327e8ba1bcabd2829cc0c7573b7fd7f1122050

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