Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed65aaa38fa6dcdd…

MALICIOUS

PDF

64.2 KB Created: 2020-10-24 07:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ad96bb457e9dc43b4b12945e21b5ae1c SHA-1: 8b27895726aaaa0ffcfdb6129ba3a9f85c2b4fc1 SHA-256: ed65aaa38fa6dcddef79c4b4d13d09a84cef1ff63084b187a3664eb83973bb54
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ttraff.link/aws?keyword=analogical+reasoning+in+islamic+jurisprudence+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5f938cf35ca96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384152/normal_5f8d6f90150b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f8ea04590566.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/9934967.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/moxuguwufadonub_getafupakebon.pdfIn PDF document text
    • https://zeruxexo.weebly.com/uploads/1/3/4/3/134373455/e4d78a24c66e009.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/5594096.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/6192153.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/wifalepom.pdfIn PDF document text
    • https://viziwebaf.weebly.com/uploads/1/3/3/9/133999863/19b9b845831f9a9.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/kejep-vowosoxaximeleg-saxanifol.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/382f8cca1f0.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/9510144.pdfIn PDF document text
    • https://tisatazufewuvo.weebly.com/uploads/1/3/1/1/131163687/3993147.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/9b53ec72f.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/kevosefapinevo.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/gejaxuruxil.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/nanalu.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/2499678.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off000093ca.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off000093ca.bin)
    • http://www.daltonmaag.com/In extracted file (font_04_sfnt_off0000e368.bin)
    • https://uploads.strikinglycdn.com/files/ccf80931-a1cf-40f5-b7a0-8425513efe0b/furumuwum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a4a46ca-5ea1-4dff-bd03-4f4697efa73e/wikip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcc0972d-6c8a-494e-bcba-115d9d7c879d/paruzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8dd42f1-328b-497e-9de4-12d04ba28712/juponuropor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d950220b-a845-4d08-8140-1e5bedf40e39/23950104111.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://dejavu.sourceforge.netIn extracted file (stream_007_off0000cade.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_007_off0000cade.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off000093ca.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000cade.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCADE 17068 bytes
SHA-256: 896b25a9bd8d61177e2ac6c60eb2dd1185631a48f219c8a7af2579c16b398d2c
font_00_sfnt_off00008911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8911 3016 bytes
SHA-256: f94113b0d823cd21ee9529555d86d002476fc3b3c9e50b68aab2760f887ca822
font_01_sfnt_off000093ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CA 5340 bytes
SHA-256: 045d59aac2fc6ceaae4491b272582b3434a28e38c07e1c4e57307a54767c8b83
font_02_sfnt_off0000a5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D4 11008 bytes
SHA-256: 3f8888fe6b99f8528032be9a68fdf5ef86ffb19cbb6478b4e58410af780e5cac
font_04_sfnt_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f