Malicious PDF — malware analysis report

Static analysis result for SHA-256 484f1471b64aa314…

MALICIOUS

PDF

69.1 KB Created: 2020-11-14 08:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7de3207f0098f809fe982e237825a80 SHA-1: 7c24230c2f6d802ed4ef68e58d03a4fdc07b8f28 SHA-256: 484f1471b64aa31474882c3d99e4eabc34271edea0d663cf59a05af2f67d8015
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=princess+tiana+dress
    • https://cdn-cms.f-static.net/uploads/4416932/normal_5fa66457499be.pdf
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f872c127d038.pdf
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f89962255df6.pdf
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f92105e8af31.pdf
    • https://nuzixusimupe.weebly.com/uploads/1/3/4/3/134306281/jewosiju-wukogige-dojogusujana-bokeburatowelu.pdf
    • https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/a24d3c.pdf
    • https://cdn-cms.f-static.net/uploads/4449622/normal_5fab6ee1e629e.pdf
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/78e6dac58.pdf
    • https://cdn-cms.f-static.net/uploads/4417527/normal_5f97bb35d1ed5.pdf
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f870cd356038.pdf
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/bijawixevibo-metamosukes-jekulukiz-tesoromiwi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lumixi/wapemawol.pdf
    • https://uploads.strikinglycdn.com/files/f8d58c12-ffb1-4ed7-ac3c-bf2ee4ca3197/alaska_tsunami_1958_video.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c68c.bin
5bbb85c5d92cb49c56c52844f30edffa7def5815fcf114990881d0731036bdd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC68C 4580 bytes
font_01_sfnt_off0000d609.bin
c7899560ebb1303e7ba47f09530a7613195d061afb01ebb37156d18ec5dd77ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD609 10392 bytes
font_02_sfnt_off0000f9a5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A5 4324 bytes

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