Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabc75804d736cd5…

MALICIOUS

PDF

84.6 KB Created: 2021-03-27 17:14:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6cebd108aee5447e9d8cfee1690b94c7 SHA-1: 2e4e15ef5b6ae050c5b52c0db7c08e5b8c7c227d SHA-256: eabc75804d736cd5d20926eb22d349069035d983bfd9d629903f89458dbcc9f2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to suspicious or disposable domains, suggesting a link farm designed to distribute malware or phish users. The presence of a "download button" heuristic and ClamAV detection further supports a malicious intent. While no scripts were extracted, the overall structure and URL distribution indicate a likely attempt to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/award?keyword=mathematics+all+formula+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367308/normal_5fe6cad0ed651.pdfIn PDF document text
    • http://visovewefa.iblogger.org/63192509685.pdfIn PDF document text
    • https://fawirato.weebly.com/uploads/1/3/5/3/135392883/kimowe.pdfIn PDF document text
    • https://cdn.sqhk.co/sivumazudi/cieYsje/badlands_national_park_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_605c972aa8e0c.pdfIn PDF document text
    • https://sazexijubix.weebly.com/uploads/1/3/4/5/134599352/3530396.pdfIn PDF document text
    • https://vozunekoba.weebly.com/uploads/1/3/4/9/134902797/budojilenobumasoli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_6005de8774632.pdfIn PDF document text
    • https://tesiligozi.weebly.com/uploads/1/3/1/4/131407846/25094cdea99d54.pdfIn PDF document text
    • https://makigomeludawuk.weebly.com/uploads/1/3/4/7/134748455/xorafojijubij_gudatobut_xogutusasori_panot.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/jhjfQbH/warframe_panzer_vulpaphyla_build.pdfIn PDF document text
    • https://cdn.sqhk.co/wusirilunoko/QaicGm4/cartoon_network_free_online_games_s.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/nyOYujg/transformers_forged_to_fight_mod_apk_unlimited_crystals.pdfIn PDF document text
    • http://tedabelefodeb.22web.org/53405263929.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9ab19a7f-a8be-464d-b6f7-f34a01bb581a/16785244186.pdfIn PDF document text
    • https://45b0b119-5f8c-43e7-b437-4e12d17c1c81.filesusr.com/ugd/3826db_496b411716564d54b7c428357f7f24da.pdf?index=trueIn PDF document text
    • https://2386e270-bd20-42c1-b3e5-1ba7eaa1d68d.filesusr.com/ugd/b4f0c6_05ed688cefe34d319af321a87ccee4d6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3003d034-051c-49e2-898a-8321bab303cf/dexowo.pdfIn PDF document text
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_a83e5ef0f5824f139f1947f14afe396f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b895d0-30df-4082-ab7a-aee4ea360fab/indiana_breaking_news_accident_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0077fb0a-94a3-47aa-a6f7-d7f64cfe691b/63469716923.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE25 5376 bytes
SHA-256: b4e771ce51bea9c52fc5deedef5bab17dac52560184c2c405b99af0935c05ce3
font_01_sfnt_off00011055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11055 10892 bytes
SHA-256: 58721123be2d539c89853d2f3f9df279dac0c499fcb92f9ff3d276e4a9f7386b
font_02_sfnt_off00013527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13527 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.