Malicious PDF — malware analysis report

Static analysis result for SHA-256 60796d5d78b4cb52…

MALICIOUS

PDF

67.8 KB Created: 2020-12-22 15:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6c45a2ec4c120a89026d6acc683941c5 SHA-1: 7b2ba876f2c5d4eb097e2a3c93d8262efd85357a SHA-256: 60796d5d78b4cb52b4ade470b01818dace4be53e18b8ef13d6220a0a751fcf05
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to disposable hosting services and appear to be part of a link farm designed to improve search engine rankings. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://cctraff.ru/strik'. This suggests the document is part of a phishing or scam campaign, likely aiming to redirect users to malicious sites or download unwanted applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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?utm_term=download+aplikasi+7+minute+vocal+warm+up+pro In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f896df062c49.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/zizelox.pdfIn PDF document text
    • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/josuz_zaselifuvepux.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/2378194.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495841/normal_5fb78a7e3d17c.pdfIn PDF document text
    • https://wekexodaxax.weebly.com/uploads/1/3/4/7/134713384/mebug.pdfIn PDF document text
    • https://rodazikajoreme.weebly.com/uploads/1/3/0/8/130874285/3082565.pdfIn PDF document text
    • https://kakezilek.weebly.com/uploads/1/3/4/4/134401463/5057718.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/kodiridogijero.pdfIn PDF document text
    • https://lakujasoramaw.weebly.com/uploads/1/3/4/4/134400634/9046595.pdfIn PDF document text
    • https://sanakutubifave.weebly.com/uploads/1/3/4/8/134849958/6391924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_5f8cc5f8d1fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408599/normal_5fae5483de303.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/86e3dc40-a0ca-4dbf-ac30-41917f9d5029/juxifotafomoxafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70a4dd80-e273-4d63-822c-19d030b9962a/24689389052.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_off0000bc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6F 5516 bytes
SHA-256: 6121a6a95b042c1fa19d8e44c627c307ad5ff0fe9f305bd0fda5983ce7f00da9
font_01_sfnt_off0000cf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF38 3380 bytes
SHA-256: a098ca1f20de6c3445e5fe6e675757996682f483052e5480ae26f506fe984355
font_02_sfnt_off0000dcfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFB 10968 bytes
SHA-256: a4653df80f17dc4a39fd72ade8bd93eaa103c9c94a83cc745b267b7753de89f8

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