Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f00ce24003f7fd…

MALICIOUS

PDF

71.4 KB Created: 2020-12-31 00:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8d78246c8f506cd1ed6414f1010eff2a SHA-1: 03b3e6a0b98010aeafd5064bf610aea0ba501b63 SHA-256: 71f00ce24003f7fdfa57bd569b527754dd9ba7b09c2a2443447654a0d961db0b
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'talking cat games', likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ggtraff.ru/strik?utm_term=my+talking+cat+games In PDF document text
    • https://xuzexutibezime.weebly.com/uploads/1/3/4/9/134904436/dowolugigugowi.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/ZFgjfBs/slot_car_road_race_sets.pdfIn PDF document text
    • https://bileravufal.weebly.com/uploads/1/3/4/7/134749654/7265809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369919/normal_5f8b9542b4a57.pdfIn PDF document text
    • https://fevuvewuvadudu.weebly.com/uploads/1/3/4/6/134650824/lukekavolupepa.pdfIn PDF document text
    • https://rofaxebawo.weebly.com/uploads/1/3/4/7/134750080/04e98ec9964f5b4.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/chgigxR/moguvatofilotamiwur.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/3b1dee04-098b-4023-9a3c-d04e7ab21d14/liwofuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d3295f-1d0a-4a55-b9e2-5ca5797b0c8f/86307917869.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_off0000dc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC24 5196 bytes
SHA-256: 6a8750c217a92bf48d5e46972aaadadf73a96d37606fcfa42a43d55abe8ba170
font_01_sfnt_off0000ede4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE4 10460 bytes
SHA-256: ef928ba46e051e9c7e0134e96d0a88d0588c0e15a91fcfac6192827ccdd9ac91