Malicious PDF — malware analysis report

Static analysis result for SHA-256 69c41dbfb87f6a6d…

MALICIOUS

PDF

80.6 KB Created: 2021-01-01 05:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a7398afbd9da96ce5ee27a4b6aed1cc1 SHA-1: eacc8cf4cabbde09b7a7fbde9ce3a30a7c463e6a SHA-256: 69c41dbfb87f6a6d684cf7eddf62eb1987a441e6695d798bcab93fa8c49ef2a8
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various websites. The primary URL identified is 'https://traffset.ru/123?utm_term=to+die+2'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malicious content distribution through a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/123?utm_term=to+die+2 PDF link annotation
    • https://xomarexisu.weebly.com/uploads/1/3/4/7/134701616/sixare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417037/normal_5f98a8b11ebbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_5fb2887f72eb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490725/normal_5fc5ad44bc4eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fcdb35c20e66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5f9297b3ba150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493578/normal_5fb8f3b79e095.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/tizedeniluxiz-gefowigujotubu-senunomikale.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/216bbec5-c82d-4e22-b951-b4b7fdf2864b/voxapoduranakepubetude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dd13595-2873-4484-9a17-af99dd679588/kologop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49263bce-ea0f-45ac-b960-82e2fb5afa94/romfast_apk_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a53004-2035-4d01-a280-29e4f76eeeaf/el_carcelero_de_filipos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b701934-8f77-4bf9-b910-c95f39b1989e/13th_age_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755123fd-8b33-429c-997e-91576ef1d32b/what_is_the_unit_of_speed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/632ee0f5-9f5a-46eb-b9d2-714aadd36950/36481933963.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_off0000f523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF523 3988 bytes
SHA-256: 5a0b67cfe75aa43f4677d605f34f94e18b08127be7201529d2ac31ac20a34bda
font_01_sfnt_off000102a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A3 10924 bytes
SHA-256: f5af369382e0782c66cf5f7cb8b0d567ae08070bd0eb1bd6ef6382c0da1881f8
font_02_sfnt_off0001280c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1280C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.