Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b0c24a346b88bb…

MALICIOUS

PDF

89.1 KB Created: 2021-03-14 01:29:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93e6467f77fdbc153717a51a7a65688a SHA-1: 1241387ba8ab79ecdccaa77fd59e1d42f54c3184 SHA-256: 80b0c24a346b88bbdc478f8e92dd1f31e1e56c14f7dd156c3a05a998dcf2e30c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, suggests a lure related to historical content to mask the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=kedatangan+bangsa+belanda+ke+indonesia+pdf
    • https://tunawirivam.weebly.com/uploads/1/3/1/4/131437064/5044d.pdf
    • http://rfs.team/cannon_fall_guy_cast538a7.pdf
    • http://digitalmicroteter.xyz/xuzevesea5zu.pdf
    • http://teenagetutor.net/tuloxitajivorase7xg90.pdf
    • http://dreabling.online/fukodedikubavijarifajahg4gy.pdf
    • http://dkshlyap.ru/intracellular_signallingthwvj.pdf
    • https://gufulesem.weebly.com/uploads/1/3/4/6/134698375/xozekinugije_kufarab_fejivod_bisema.pdf
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5ff9211fc683a.pdf
    • https://cdn-cms.f-static.net/uploads/4485156/normal_60344b6312377.pdf
    • https://static.s123-cdn-static.com/uploads/4413244/normal_5fc84747ab829.pdf
    • https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/3fddb2ecb94e.pdf
    • http://wei-nmvc.com/paradise_island_apartmentskk72q.pdf
    • http://help-service-support.com/gepukojafcenys.pdf
    • http://mnogoturov.com/setowuta4rh9f.pdf
    • https://cdn-cms.f-static.net/uploads/4481515/normal_604d48a0b23bf.pdf
    • http://item-get.top/sakura_dungeon_cg_galleryy6tyh.pdf
    • http://skidki-day.store/1419046918gwx3.pdf
    • https://tunegize.weebly.com/uploads/1/3/4/5/134500295/814a589da2c.pdf
    • http://my-favshopc.online/dotawuxaselu2a69c.pdf
    • http://electorat.org/giwavutixodobupali74o4h.pdf
    • http://sanatoriy-izumrudny.ru/ally_smash_bros_twitterlzdzl.pdf
    • http://silkhfig.bid/modern_industrial_organization_4th_edition_downloadvc1ao.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b8436764-02b3-4471-8711-1e8fed235cf0.filesusr.com/ugd/3b3fbb_32a0c927cd0d4102a31b64ea57f93f84.pdf?index=true
    • https://6558ac43-984d-4e3a-97a1-dec8860611ed.filesusr.com/ugd/c73740_5cac8c5834b948a2a1fdad48c88f533c.pdf?index=true
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_9f389019676747ecbeb8204321e2f0d4.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e63.bin
30af530817cb470c2c8284e2390905dd90805b53994d4f6a589a76a4120f1b0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E63 5284 bytes
font_01_sfnt_off0001306f.bin
c370e1bbda529fb6a4d618c97737e9bafdff8e3cc09a66a2be0642d884145505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1306F 11284 bytes

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