Malicious PDF — malware analysis report

Static analysis result for SHA-256 198e04173225e496…

MALICIOUS

PDF

120.3 KB Created: 2020-11-24 11:21:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0dae409238f3d91512e77ca1cc2fba20 SHA-1: 2a4789294f2ed1d0aed3034793ea06925ac512ea SHA-256: 198e04173225e4965e21cfcba7aaeb67a34dcf0b702956612d721d0e3e665743
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://cctraff.ru/123?utm_term=peak+action+of+humalog In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5faad985ceaca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f8cfc6c3ae32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5f98a6f496581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5fae08fec7e8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f8704122e084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_5f925e932a14f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f8b5bb1de37a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f93a01b0f309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_5fafdd0d1a098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405652/normal_5f934e96b7c00.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/1dc86055-c98b-48f0-8101-6dd9c72e3b8a/63087080038.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/dexapogemit.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/the_abyss_surrounds_us_book_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e32394ae-e3bd-44ca-b2f5-2e3111ff8a1d/jelqing_photos_before_and_after.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 3

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_off000197b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197B4 5088 bytes
SHA-256: 98e9a70164a88b7017cc43ca034fcbe5416e74c124eb87a4759fab09b79733d7
font_01_sfnt_off0001a8ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8EA 13656 bytes
SHA-256: 1b97f374a0c049d02bc9a3a33543e933d53b93593e80c64da019b4b107eef4a6

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