Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5ff24effcbc3c7…

MALICIOUS

PDF

42.2 KB Created: 2020-09-17 05:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02e6bbd8b465b2548701f94c0945b771 SHA-1: f32c8acef03ec4fdd7e6397bf231e311790da8f5 SHA-256: fe5ff24effcbc3c7587621ed0ea431940c0ddb6560f91b0b3ed89c04ec3ddeba
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document also exhibits characteristics of a PDF link farm, with numerous embedded links to other PDF files, potentially for SEO manipulation or to host further malicious content. The ML classifier strongly supports the malicious verdict.

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://ttraff.ru/wix?keyword=yeh+hai+mohabbatein+27th+july+2018+written+update In PDF document text
    • http://zozasipon.acsunrise.org/uploads/1/3/0/7/130776478/povenajod-jiluxogo-fuximejusigova.pdfIn PDF document text
    • http://mebinoful.austindiadelosmuertos.org/uploads/1/3/0/9/130969465/gipiritolijo.pdfIn PDF document text
    • http://vilak.homerbiology.com/uploads/1/3/1/6/131637291/138650.pdfIn PDF document text
    • http://files.drlindagedeon.com/uploads/1/3/0/8/130813095/ruzokovuduxujawuw.pdfIn PDF document text
    • http://files.ofiar.org/uploads/1/3/1/8/131856380/27f72542.pdfIn PDF document text
    • http://sorudigiw.jrscloset.com/uploads/1/3/1/3/131398589/1141422.pdfIn PDF document text
    • http://zijapo.buttonplanet.com/uploads/1/3/1/3/131380344/7765736.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7042973a-4f66-4183-a33b-9cafd1a1436e.filesusr.com/ugd/cfbfd2_98d7eb9fed11446bab476428048956bf.pdf?index=trueIn PDF document text
    • https://f7b39daf-8f83-42d2-bc40-f49c641c17f8.filesusr.com/ugd/eb6612_696620780b484bf3a4a8562f7ad2d24b.pdf?index=trueIn PDF document text
    • https://9c013f76-0f14-4f34-8037-f3c474cd2fc1.filesusr.com/ugd/72b0e7_08ee7a3722af47ebbb18ceb29ef74e03.pdf?index=trueIn PDF document text
    • https://e4409439-8146-40b3-bd74-eb1971459de6.filesusr.com/ugd/286fb8_234d4454a1034f22bbd3b94ebaa08d6d.pdf?index=trueIn PDF document text
    • https://878da0ba-b8cf-466e-b767-0904e0bf54c4.filesusr.com/ugd/9ced5d_12e56019313b4ede8ed77162d1c19051.pdf?index=trueIn PDF document text
    • https://259cfbbe-c33f-4ea3-a7a8-1bc5d715af70.filesusr.com/ugd/f51585_f4e680a3ec334ab7886ede83893eb1fc.pdf?index=trueIn PDF document text
    • https://3613619a-9e2b-4116-8a6c-9199b03038ef.filesusr.com/ugd/3e5d97_4793fc78372a44269e2c55b0703f2bd9.pdf?index=trueIn PDF document text
    • https://90cb04c8-42c9-4f57-b679-f820b44d7f59.filesusr.com/ugd/96564c_0e3ec38d95ed4bd484469abb7ece4766.pdf?index=trueIn PDF document text
    • https://f84c539a-369d-47b7-be7a-11d7fe6e460a.filesusr.com/ugd/a07927_c193d9e1646146bfb8b290bd76c99b0b.pdf?index=trueIn PDF document text
    • https://64e54a28-b9b8-422d-96f8-3384d34efd80.filesusr.com/ugd/bba345_e4063cff57f9494b83c97185d10fde92.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_off00006656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 5992 bytes
SHA-256: b2ad6d7d4f4463889cd777deaf1d1aca71668eae489b996397626d29542b9104
font_01_sfnt_off00007ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB3 9576 bytes
SHA-256: ddc76a73f07f7beb37148640e1acef41c7c13fa53d8d67d75bc357927e7fb40b