Malicious PDF — malware analysis report

Static analysis result for SHA-256 15529320633ce929…

MALICIOUS

PDF

72.3 KB Created: 2021-01-01 09:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1338471d828f7fe613fe64e8a311fd85 SHA-1: ed9be7c4f8ef0adf203bca748dc463f707ebb2e8 SHA-256: 15529320633ce92978778ac7c266b6051f538810b22d0e14fae3724c32d94b0c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical finding for a PDF link farm and ClamAV detection as a phishing trojan. The presence of numerous external links, including one pointing to 'traffset.ru', suggests a malicious intent to redirect users. While no scripts were directly extracted, the PDF structure and link farm indicate a likely attempt to host or link to malicious content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=escambia+county+arrests+mugshots PDF link annotation
    • https://bexizesuxeneze.weebly.com/uploads/1/3/4/6/134634073/77f3f0dbd.pdfIn PDF document text
    • https://cdn.sqhk.co/bebetirifam/hdVhe4C/grim_clicker_chest.pdfIn PDF document text
    • https://cdn.sqhk.co/xetasenuwoji/SozwxHe/oscar_health_tempe_jobs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5f8f41de6b63a.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/c118c701-9bed-4ad2-bc22-08c4efa8b59b/michael_jang_rhce_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/864db0bb-9d44-4525-8402-8ecc4edf7fa0/tukilafexosumariwov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8906447b-2021-41eb-8e0f-3c1c4fa94e8d/dunuwije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98e42cb-7ce9-4691-8ad8-b178c5907177/gtrc_mini_dlg_rc_glider.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6408ad7f-640a-447a-9d40-f6f03b986e9a/crime_prevention_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7047004-d664-4e53-be55-8664f6d380b6/balfour_v_balfour.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d56751f3-a578-458f-9326-0c3203eca332/call_of_duty_zombies_3d_models.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b552072-8a14-4ed6-947a-fe1e4f8d2fb5/holistic_learning_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6413fc-6c40-404a-a5b8-564794eccfc9/precision_tree_excel_add_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3171a43e-6753-4405-9ea2-bc135b41dbf6/sword_art_online_ordinal_scale_mp4.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 6

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_off0000db63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB63 5380 bytes
SHA-256: db872a8ac3eaadaaff91e2319a9f83e86570326136d2499d30301e5c57294369
font_01_sfnt_off0000ed93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED93 11360 bytes
SHA-256: a5950f615faf6932aeeaa8c410272c8abca4270cd92a77c3ac547191f9e72e48

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