Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a946072d9697c2…

MALICIOUS

PDF

75.1 KB Created: 2021-01-09 17:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 00be4aa474276830016ea41fcf95102c SHA-1: d18e91dbde7aec4d7dced23ac40d76c5808d7d60 SHA-256: f5a946072d9697c265a7579b5a32bdfde1b9fe52b4d9215f2f4996456a6c13a2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no explicit scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/aws?utm_term=bioinformatics+data+analysis+jobs In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490375/normal_5fcbf0b70bd29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5fe176c6857b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_5faf585f02919.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/kukazowox/49721992197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d3767a1-f7c5-4929-80cb-556e25fff69c/1-2_practice_worksheet_composition_and_inverses_of_functions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6292269-2ec9-4b7a-b381-3a1c6320e93a/happy_wheels_3_game_demo.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/74238599959.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/64068811527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d859c5e-97ff-4439-a3ee-a8ac476cb62f/86547852316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897c0ce8-82b0-4b27-9535-db82c6e8aaa4/72081236914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08403a62-7de4-468c-81b0-becf614f016e/jm_cash_and_gold_services_coogee_wa.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/canada_weather_climate_information.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_off0000e99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99B 5532 bytes
SHA-256: f7a5ccf682d5af01c4ea47133bf8bcef1822e8fea9c9a08b2622a896a299820e
font_01_sfnt_off0000fc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 10220 bytes
SHA-256: 0b62c3bd97c68fe208148675e92225518b6db9b59772ab9ddd822561a3b35e77

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