Malicious PDF — malware analysis report

Static analysis result for SHA-256 161e007993ec7079…

MALICIOUS

PDF

55.7 KB Created: 2020-10-07 14:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d42357cf85eccaa64ecc9ee21315c4c SHA-1: 43bef000cbff72bda98d04dab7590550837c079e SHA-256: 161e007993ec7079fc79507af4be17c5c1ab8b07e019c709ee36bf9198193ac6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded URLs, with at least one identified as a malicious redirector. The document body text is largely garbled, but the presence of numerous links suggests an attempt to lure users to external, potentially malicious, sites. The ML classifier also strongly indicated maliciousness.

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/strik?keyword=real-+life+discipleship+training+man In PDF document text
    • http://wipujoke.ejchscounseling.com/uploads/1/3/2/8/132816042/9739870.pdfIn PDF document text
    • http://buputep.bynancyohare.com/uploads/1/3/1/4/131438096/97070fc56f0ee4.pdfIn PDF document text
    • http://files.dhnevins.com/uploads/1/3/0/8/130873807/61bb17b48e20.pdfIn PDF document text
    • http://files.perhappened.com/uploads/1/3/2/8/132815002/1717746.pdfIn PDF document text
    • http://files.kymbreanne.com/uploads/1/3/1/3/131379709/e4c78e72.pdfIn PDF document text
    • http://fubez.myhamercandy.com/uploads/1/3/1/4/131437774/nezesowijuto.pdfIn PDF document text
    • http://files.canaseragafestival.com/uploads/1/3/1/6/131607019/botajaridekikaj-sijufojovutube-sukemaxigumujag-fuwavevuwur.pdfIn PDF document text
    • http://files.mrgona.com/uploads/1/3/2/6/132682768/fadezevep-kateses.pdfIn PDF document text
    • http://diwuje.advancedliferesources.com/uploads/1/3/1/4/131483830/9160097.pdfIn PDF document text
    • https://site-1041081.mozfiles.com/files/1041081/17917910582.pdfIn PDF document text
    • https://site-1039456.mozfiles.com/files/1039456/14241254296.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
    • 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_off00008fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAC 5284 bytes
SHA-256: f008b0dab994e5fec64c2c32696711603698f322af82c4043d6c8a1b2f38a153
font_01_sfnt_off0000a17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA17E 10052 bytes
SHA-256: c6eb16711e5aa174c3eba03817032d1fd276bc01e470eb559ba57a6cfe207d85
font_02_sfnt_off0000c3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e