Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea0aeead8b55331…

MALICIOUS

PDF

75.4 KB Created: 2020-11-22 00:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8f52d7c131b8de840653a5741852b4a4 SHA-1: eb0dc7629815ddc93587a3c62c0b5c79ccf957e3 SHA-256: 4ea0aeead8b55331fa659dd63a9d921de6ff119f8698c8452de759af33af62f0
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 'https://ggtraff.ru/aws?utm_term=jira+software+project+templates'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=jira+software+project+templates In PDF document text
    • https://cdn-cms.f-static.net/uploads/4495058/normal_5fab7339aae07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388815/normal_5f909e6fc02b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5fb2bfc5acc1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385437/normal_5f91997d428b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8f5e70c93d8.pdfIn PDF document text
    • https://kanabebivuze.weebly.com/uploads/1/3/4/4/134457147/buzetanudotiwulut.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/sobibizagavubuna.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/vonusirukete/apple_ipod_touch_costco.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/brgschaft_formular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2540c406-9e2a-434c-80c5-94e29fb5dbca/26594145736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c51d7b5-ad11-4dd9-bc7d-8e659c5bd13c/fifufutalubep.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/wipadejubutoneke.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/ankh_shield_crafting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/the_legend_of_spyro_dawn_of_the_dragon_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/purokawezoneladukare.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_off0000e6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D5 5320 bytes
SHA-256: 028dae0215d6ed73afa108b2202c1a6573fc745655d11d7fe66c42070d2c8a50
font_01_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 12172 bytes
SHA-256: 4f27a7e2335681dea0977af74bdea9c20e6e0c5112314e22641ad269984170b3

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