Malicious PDF — malware analysis report

Static analysis result for SHA-256 7006a800cdab2cb5…

MALICIOUS

PDF

40.1 KB Created: 2020-11-08 23:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 10dd43fa2e960b33c0da36fb86b0f560 SHA-1: be3cce986736f8c4b7c16b50c00b0bacd748ae5e SHA-256: 7006a800cdab2cb59ab40c85dd49bd22833ca605756b0c559ebdcb0e26b4618d
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of malicious redirector infrastructure. The document body contains text related to a software update lure, which is a common tactic for distributing malware or leading users to malicious sites.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?keyword=power+director+12+update In PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/folutudipafej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453740/normal_5fa7688231d62.pdfIn PDF document text
    • https://mavegisokelu.weebly.com/uploads/1/3/4/1/134131346/3955854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5fa149023992f.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/416ea5bee16a.pdfIn PDF document text
    • https://wovokuvodopi.weebly.com/uploads/1/3/4/6/134685597/wimeluken_genaxozizesor_zasapilu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f90d7124ec9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a4d1fbf-8566-4748-96c9-09e16c6205da/dujumipomijusorugebeminaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d95f0641-4947-4a12-b3be-6e429779d923/cs_1._6_aimbot_hack_link.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/zipasar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742e846f-db02-45b3-80ed-b1b7db5baa5f/78776696797.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/17072550762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11cb41df-f3a2-48a1-abdc-6a60a20b3a36/37763576581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30154a7a-8e2e-468c-8e0a-63e716bb796d/jejozofatiwatazewovomux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0246e6-5052-46fc-8edd-70da31af15b6/wojiwu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 5136 bytes
SHA-256: 1c893603a5df481895e8ded4667453631862d52a5a8dac4a675985f930d6e815
font_01_sfnt_off00006f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8C 10668 bytes
SHA-256: fb6d4af0f3e84d49dc6cfc05a09c36c16af0e344b60281bf88747389c8360c3a

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