Malicious PDF — malware analysis report

Static analysis result for SHA-256 1713829aef9561b7…

MALICIOUS

PDF

79.6 KB Created: 2020-12-31 20:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 79a407d8e149ac17daa16cbac2ee6d3f SHA-1: 0500dbaed7113a07ed889a02441d14d57628baca SHA-256: 1713829aef9561b7271ce72c96146b45882986a3eb3a4fd984e88eae0b5eaf0e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gettraff.ru/strik?utm_term=did+it+again+lyrics+carti'. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/strik?utm_term=did+it+again+lyrics+carti In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_5fa69ba06d868.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/VjnNPw8/10181328302.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381748/normal_5fca27ef33e84.pdfIn PDF document text
    • https://cdn.sqhk.co/semobisugigi/hVThjJX/koregen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0832ac91-d34f-46c7-a267-bd75499ab953/boxuxefud.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/interactive_brokers_api_reference_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/relative_dating_activity_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/551c96c0-f4e0-4dd4-9426-0f584bd465f0/35994826379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bfd96d2-e775-403f-816c-861fe9b4a346/kingdom_come_deliverance_avid_reader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80ae6aa4-9cdc-491d-bb0a-6465f525b080/giwoxumanegalilut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89c7a858-8df1-422c-af47-832124c43115/vehicle_sales_agreement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2b0da13-6152-43d5-82a0-d50302b25423/experiencing_intercultural_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3ba4c7-dd41-4d60-95a0-f9bd464dc7e3/14_and_under_1973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66f22c38-53b1-4dd6-a25c-d6760f8e8524/dd_5e_moon_elf_stats.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 4768 bytes
SHA-256: 025a3cd010cc5179a0510f1093f654bec9f37d52c2df394c2c5fa4a3048f8095
font_01_sfnt_off0000fd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD67 11144 bytes
SHA-256: a6ffcbe07229dc1af787d98759b7377bda89f6ac58640f05e1e2de25082c4dea
font_02_sfnt_off00012337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12337 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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