Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac15d95af889065…

MALICIOUS

PDF

62.5 KB Created: 2021-01-09 16:21:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 09969d5c639835e455308a06de9e2d1f SHA-1: 314a9205ad1e54028cbf6d1d9adaa63c5ac8d229 SHA-256: 1ac15d95af8890655abb953a4f5cacba96d4fb3a101000f0075e6508aba47e1e
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 0.9996

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/wb?keyword=hape%20marble%20run%20target In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5f8effcd1ef71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f8ddf1647061.pdfIn PDF document text
    • https://cdn.sqhk.co/rebiguta/mTighhR/women_s_hockey_world_cup_2022_host_country.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/fupanabivote/26416913690.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/58223419902.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/witifavat.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/vobazijogegudanibudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/319ce7f5-27d2-4da8-bb60-7b02b3044b33/gawoxerimibeseruk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/838fa6f3-d83c-4a31-8147-9afc536aa180/fatusodemilanekuxanef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdf50402-0ea0-4a45-8193-fc7bfc83f8e8/sims_4_weight_gain.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/zutatumukikobodasedopo.pdfIn PDF document text
    • https://s3.amazonaws.com/kalufizefem/50_shades_of_grey_movie_123_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549c3297-5479-4aa8-bc2e-6c4fa5a2598f/watch_godzilla_king_of_the_monsters_online_free_reddit.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_off0000ba58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA58 5060 bytes
SHA-256: ed53319b9db4d3a591c0758c6aac2634dd286a3ea77890735386da8273f34894
font_01_sfnt_off0000cb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB74 10000 bytes
SHA-256: 9d924915617ffca75e148f79d98f81ed963cad84b192aef0c575f49dbdbe3bc4

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