Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb65a4671db6a504…

MALICIOUS

PDF

63.0 KB Created: 2021-01-01 19:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e7a4de94be345278ac61dc81ca8c95b SHA-1: 53d28d4ab462b39d8f315107eec54b8c7c8a0588 SHA-256: cb65a4671db6a50479cf5663837d26011b53161ab7bc8dec3d8ba5db01315249
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to a suspicious domain, likely intended to phish or deliver a payload. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=movie+making+app+for+pc
    • https://cdn-cms.f-static.net/uploads/4408712/normal_5f9f9ba01520e.pdf
    • https://static.s123-cdn-static.com/uploads/4369336/normal_5fe4b165c2edd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b6ca1b44-b102-43fb-8b44-b23dc9216410/78906640412.pdf
    • https://s3.amazonaws.com/kalufizefem/32750540366.pdf
    • https://s3.amazonaws.com/wefadep/fractions_decimals_and_percentages_ks2_worksheet.pdf
    • https://s3.amazonaws.com/vipuxafol/11th_computer_science_quarterly_answer_key_2018.pdf
    • https://s3.amazonaws.com/mokuwanibof/beehive_class_9_ncert.pdf
    • https://s3.amazonaws.com/zamuriza/zutiruludewapesexukof.pdf
    • https://s3.amazonaws.com/petikamov/suwejoworigeka.pdf
    • https://s3.amazonaws.com/votubukaxogilix/9328944445.pdf
    • https://uploads.strikinglycdn.com/files/a635eda0-17ce-4072-91f2-d3f54c51545e/environment_and_you_christensen.pdf
    • https://s3.amazonaws.com/wulotugadag/linear_programming_word_problems_worksheet_1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc69.bin
b72732b2b0f969c6cf11c2c16de64448dd92723cc7c42c6628fd3269947d0a35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC69 5252 bytes
font_01_sfnt_off0000ce4f.bin
742afa2dda93a809d72ba5305b94c991fa2da55d9fe6af6ffba69385637a3aa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4F 9700 bytes

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