Malicious PDF — malware analysis report

Static analysis result for SHA-256 45febc142119b407…

MALICIOUS

PDF

70.5 KB Created: 2021-01-05 22:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e3ab1bae469fc3c4b6c054cceacb9b92 SHA-1: bb42db2cf7f99aaa2860c2c0e1689f2f8a76e692 SHA-256: 45febc142119b407a0d4baa088029235d9e81f4640154f87a5ac941b073c78ee
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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
  • 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.
  • 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?utm_term=truck+bed+water+tank+with+a+63+gallon+capacity In PDF document text
    • https://cdn.sqhk.co/fijajiles/dhghkEE/checkers_near_me_now.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5fadc19842403.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/ritikitiwokej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481164/normal_5fc5010bc726d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388060/normal_5fd8682e4d84a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459792/normal_5fac4470417bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_5fab30bc49c8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/34343298782.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/gedogizejula.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_off0000d5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DE 5824 bytes
SHA-256: 3c474501a5b194c55f89a244c51a634f99c0d876928c42dbd6941b34dd0f9cd4
font_01_sfnt_off0000e9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C3 10388 bytes
SHA-256: a39be332ff916d2e0470a5acde34889c3e5990fd85c919931a2cba2985829e7d

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