Malicious PDF — malware analysis report

Static analysis result for SHA-256 e197b46960119bb6…

MALICIOUS

PDF

83.0 KB Created: 2021-06-08 18:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 627c645de4872693a15aaec6523af67a SHA-1: 05c071a91ec8838789b2802a0f6d89042bb465f6 SHA-256: e197b46960119bb655d49351b1185945d533c71c3cba9848799a4722ab0dca3c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm. The primary URL, 'https://jumiwimov.ru/123?utm_term=revenue+nsw+purchaser+declaration+forms', suggests a lure related to official forms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for SEO manipulation or to distribute further malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jumiwimov.ru/123?utm_term=revenue+nsw+purchaser+declaration+forms PDF link annotation
    • https://fasuwilobavofe.weebly.com/uploads/1/3/4/4/134489762/2d862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_6032de4e0b0b4.pdfIn PDF document text
    • https://razasojesiwanet.weebly.com/uploads/1/3/4/3/134377469/63ab485b0a9c.pdfIn PDF document text
    • https://wovogivas.weebly.com/uploads/1/3/4/0/134012667/3241100.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5ff4591570269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_6042d76e603ab.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/sifetozubal.pdfIn PDF document text
    • https://foxufaba.weebly.com/uploads/1/3/1/4/131482874/0801cf51b5.pdfIn PDF document text
    • https://fibumexil.weebly.com/uploads/1/3/1/0/131070733/pijifunulapeliwane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419654/normal_5fcb387856e22.pdfIn PDF document text
    • https://lojumokixawivi.weebly.com/uploads/1/3/4/3/134370302/a0f1b98e17f.pdfIn PDF document text
    • https://voxukosobezut.weebly.com/uploads/1/3/4/8/134846839/gopetizupaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370064/normal_600397c12ab67.pdfIn PDF document text
    • https://gobalubige.weebly.com/uploads/1/3/5/3/135339343/5696599.pdfIn PDF document text
    • https://witufulovavivoj.weebly.com/uploads/1/3/4/3/134351467/zavidaxox-namixoduxexira-nebaxovivoxexu-jefave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_6021ee396b840.pdfIn PDF document text
    • https://nogusevufofe.weebly.com/uploads/1/3/4/5/134525370/66bb6.pdfIn PDF document text
    • https://katibaluzopoxu.weebly.com/uploads/1/3/0/7/130738884/pilukusegagazazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_6044d36804562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_6030942080660.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/75c1181a-4cff-4edd-9350-b1ed1c3da9b5/search_google_play_store_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/757083b1-5afb-4e8d-8dd7-19018bc80793/why_use_data_warehousing.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_off0000f748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF748 5436 bytes
SHA-256: 2b719c7dfe39a4d0ceba3055ddd7ed5e2114b97c80fc6d0a80425993a2bf7243
font_01_sfnt_off000109a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A8 11200 bytes
SHA-256: a4231f5a1557f0968d290b178f0cda3f862f91c7ba9f5d31783b4373ad506c22
font_02_sfnt_off00013021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13021 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c