Malicious PDF — malware analysis report

Static analysis result for SHA-256 5488bdb45fc65e40…

MALICIOUS

PDF

103.1 KB Created: 2021-04-04 10:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a96a98e9211f1767c8fa5724017042 SHA-1: de62316b480ccc546f781d1f252a0a65b580309f SHA-256: 5488bdb45fc65e40a14a63e9e6796fa545595ce5e4606201a2b7df0b123a78cd
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of an external URI heuristic firing further supports this, pointing to the URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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://soxebez.ru/award?keyword=download+ppt+keren+animasi+pdf
    • http://xsale.trade/capitulo_2b_realidades_2_answers_page_41mkcso.pdf
    • https://cdn-cms.f-static.net/uploads/4416501/normal_6015646a8dd5c.pdf
    • https://static.s123-cdn-static.com/uploads/4390663/normal_5fdf87857dd78.pdf
    • https://static.s123-cdn-static.com/uploads/4421782/normal_5fc79d794f652.pdf
    • https://cdn-cms.f-static.net/uploads/4444102/normal_6046a2f3768a7.pdf
    • http://dwatches.site/gavodudiram9ga5c.pdf
    • https://static.s123-cdn-static.com/uploads/4416810/normal_5fded7151eaa9.pdf
    • http://dujaliz.iblogger.org/48070457732.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/9e0615c1-5e68-4878-95d5-34e715c12e9e/47942298317.pdf
    • http://nipesuvaz.epizy.com/totubogegoliguzurukoruxa.pdf
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_3fee8eab9e5548878f1488ecaf61f337.pdf?index=true
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_0d83ed5c79be4fe2bef9c582beb398d2.pdf?index=true
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_87a917c808af4d30874c54754c2de3e4.pdf?index=true
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_5e01e74ce6a1457f90a55a58f0eb6ae3.pdf?index=true
    • https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_41cc74c65c8a4f808a3264c042c5d767.pdf?index=true
    • https://feedbc21-cb93-402c-9ae2-3476589645d2.filesusr.com/ugd/f3ecbe_17fe1cffcf0844f5ba9a808619b4a6cf.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c9ad9010-e5ac-4df3-a245-e09e7debc23b/nonufupizozuk.pdf
    • https://efec373b-cb85-4617-95c0-ca1809d574ea.filesusr.com/ugd/9529b1_0756093918824e58a4116fe6a4eb36b7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a686f99e-0b1d-485c-a1e0-6be0db8f1a07/dell_optiplex_9020_drivers_download_windows_7_64_bit.pdf
    • https://uploads.strikinglycdn.com/files/33bc47ff-bb74-4af7-afd3-21f95f4b28c9/physics_ia_ideas_waves.pdf
    • https://uploads.strikinglycdn.com/files/d6365cf9-61a5-4cf9-9e80-da2a8c3442a9/tarun.pdf
    • http://zutotakome.epizy.com/98919354642.pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013f87.bin
4111f5a4d7ca3b39e75c595a2a086477f40d6f2f5c8b26dbab026b471db62a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F87 5132 bytes
font_01_sfnt_off000150ec.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150EC 1800 bytes
font_02_sfnt_off0001597a.bin
3465ac0bba290aedeaeb346c0d2c855ddac58127f8f658dd5a6e2aace9484f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1597A 10936 bytes
font_03_sfnt_off00017eba.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17EBA 4324 bytes

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