Malicious PDF — malware analysis report

Static analysis result for SHA-256 f565cc4baf41402f…

MALICIOUS

PDF

38.9 KB Created: 2020-10-11 23:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 48fa4a573b5c8f39ef95b21751b07402 SHA-1: a23adc375b301135672059255e88760d7491f318 SHA-256: f565cc4baf41402f439a4f108585c4ccf6d32688eecfb678b23d4f408b18cbc5
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://cctraff.ru/pify?keyword=peerless+tv+wall+mount+manual In PDF document text
    • http://tusojof.lehman-guns-research.org/uploads/1/3/1/1/131163981/mozun.pdfIn PDF document text
    • http://files.clairebeynon.com/uploads/1/3/1/3/131383747/3439861.pdfIn PDF document text
    • http://jiseg.tranceformlife.co.uk/uploads/1/3/1/4/131406390/bupagiwurixufo_puroki.pdfIn PDF document text
    • http://files.houseofenchantment.net/uploads/1/3/1/0/131070284/3709343.pdfIn PDF document text
    • http://files.rwlocke.com/uploads/1/3/1/4/131453252/mawap-sudef-tadone-rawosugonigapow.pdfIn PDF document text
    • https://site-1043203.mozfiles.com/files/1043203/wabig.pdfIn PDF document text
    • https://site-1040175.mozfiles.com/files/1040175/7441283973.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/9d8de4ab-6403-4691-b883-5576614983d3/femomij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa1d364-b0e0-476d-b7f3-0ec49ce90213/jikotunesof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92fef5f-d838-4f18-836f-0f0432f15984/41505836834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a830decc-671e-44f9-832d-2d0c71f2c8a0/zupona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3522c55e-c6b3-48b5-938f-975e5021b82f/zuvefejovanarif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2aae19b-9e61-45a7-8a25-7ed6436d32a8/31999922198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f3c6c3-f5ae-49c8-a1e6-3080dd402998/vuditujepepadiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2c7e4d-c2b5-46f8-9d41-63c878d2a37e/kidewomaremoxazuboxejiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90862dbf-3036-41e2-a9ce-4895c79601cf/dajejiwesavukeweneb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D00 4816 bytes
SHA-256: fc6d4d0b7ffe02156f769677e7f0611d58b20f855af36692700b36212ba006a4
font_01_sfnt_off00005d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 10392 bytes
SHA-256: eb78c6c5b09d889374b46a1cef5a666f353032ac7bed020d970fb8987a7904b5
font_02_sfnt_off00008059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8059 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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