Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69ffd3e631bc0ff…

MALICIOUS

PDF

83.9 KB Created: 2020-11-28 08:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8a6bbe45e879e228ef615f6d3774436a SHA-1: 9dc81c23a29d36e310b9f66e31b3f1d03257d4b1 SHA-256: a69ffd3e631bc0ff811412712ab13190509f4a0158a784695d4905956348d612
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?utm_term=work+in+the+21st+century+5th+edition+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408881/normal_5f95145315af5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385613/normal_5f9a3a256a6f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f8753f57b1d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f8859a9c0b0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f9ca95016d26.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/83ed45d3-5926-427c-97fb-f154db9e3fe6/4784071993.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/jeberojenisidevexapaxib.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/divasidofani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c5d3328-6101-42e4-9086-710f430ea268/93136079855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3bca99-47a1-43d8-a5c7-cabaea530a79/dictionary_of_psychology_terms.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/zadonawirabisoreburofuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/loguguvej.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/basbasan_at_kalingain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f7ed43d-a216-45b2-839d-d952a183a57a/joshua_david_stone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74cde172-dec1-4175-a4f1-0145513a27d5/wanadupomosuwebakij.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/kick_the_buddy_hacked_apk.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 5488 bytes
SHA-256: 9f5ef2a973f0f01f8a4a9ba6780f53b373010e348c2bd3c1ffc7aed45e949c25
font_01_sfnt_off00011c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7F 11104 bytes
SHA-256: 8302b208f9d3849fbf5de8fc9997140deba6575ac063e2033535ce2389dd5054

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