Malicious PDF — malware analysis report

Static analysis result for SHA-256 67164f026a442db1…

MALICIOUS

PDF

74.9 KB Created: 2020-11-11 12:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 36202a96719083e9e0db105b3604484d SHA-1: 3b6af22bc8926c45d417d694be3150f7183c43e2 SHA-256: 67164f026a442db1b7a6628f0ea3ed75fe40dd4354ca4fb24a183f9ae9a97707
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document exhibits malicious characteristics, including links to known malicious redirectors and a high ML classifier score. The embedded links, such as the one pointing to 'cctraff.ru', are designed to lead users to potentially harmful content, likely for phishing or malware distribution. The document's structure and the presence of numerous links suggest it functions as a lure to external malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/strik?keyword=survivor+season+41+cast+spoilers In PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/78bdc64ea85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470828/normal_5fa453b1cba1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393363/normal_5fa679b5c7823.pdfIn PDF document text
    • https://jatufajikovuna.weebly.com/uploads/1/3/4/7/134719937/fimolutedekire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_5fa22a0e7f18d.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/4823229.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/suzuvevat_wasalomux_papuwitu.pdfIn PDF document text
    • https://tadeperag.weebly.com/uploads/1/3/4/6/134605934/6883625.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/a511afb7e827751.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/belapawerezuju/fadur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68a1dfb-ac8e-409a-87e5-49f61e9d1c0a/38618649352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae2acd0d-3ead-490b-9d19-31ad4daf0fb4/dr_seuss_technical_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/208e6e1d-024c-4939-b06c-a02cc371adee/17198089864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/603800db-48c4-402d-86a5-d597185ad39d/volunteer_protection_act_new_york.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afde713e-2305-4cd5-ae6d-8902450c25c2/bimuxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/mifexebusazamepalaparoza.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_off0000e721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE721 5228 bytes
SHA-256: e06e4d6f4235c8136f6cd591508f50df04846b1dc5a453106f6eb52d72faa543
font_01_sfnt_off0000f90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90F 11040 bytes
SHA-256: 6f2f3a54d5929d74da0e1251473f219c7fa9642b6e67a23a92997cafa05cf86e

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