Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d3561a9d7c0feb…

MALICIOUS

PDF

79.3 KB Created: 2021-03-23 08:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 622e9c95dba10a36d0195631300c2a14 SHA-1: 76257ea71b6765a3c59a97374cb5eae72c26e288 SHA-256: c3d3561a9d7c0febb98b5942dc38afe84fdaae8c9089a28f84378e6d63636666
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing campaign. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it is designed to lead the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://maypoin.ru/wix?keyword=sample+child+support+agreement+letter+philippines
    • http://kifopelidito.mypressonline.com/27399532077.pdf
    • http://tapagigozi.medianewsonline.com/nefesi.pdf
    • http://budonap.iblogger.org/behind_blue_eyes_guitar.pdf
    • http://waferaboteb.mypressonline.com/logitech_keyboard_k120_russian_layout.pdf
    • http://wovuwukotuvoxi.mygamesonline.org/sukezotev.pdf
    • http://lafilubepojev.scienceontheweb.net/how_much_oil_goes_in_troy_bilt_snow_blower.pdf
    • http://dupuladusudired.mypressonline.com/bundled_tube_structures.pdf
    • http://jolixasij.sportsontheweb.net/cardiomiopatia_dilatada_en_perros.pdf
    • https://fetarulezi.weebly.com/uploads/1/3/4/4/134487317/794258ee4fd2bd6.pdf
    • https://dupomosukafe.weebly.com/uploads/1/3/5/3/135387566/6db9e21e.pdf
    • https://cdn.sqhk.co/xaranoraf/ibTib9j/55076694998.pdf
    • https://cdn.sqhk.co/xevowuto/iirEbE0/8410502388.pdf
    • https://cdn.sqhk.co/xokipuxat/qjgifgw/zombie_guard_2_mod_apk.pdf
    • https://cdn.sqhk.co/zasemewiti/ihy0gd4/sinemarulowegijanimixek.pdf
    • https://batatebuve.weebly.com/uploads/1/3/4/6/134676181/povilex.pdf
    • http://sogejovep.mypressonline.com/twilight_2_full_movie_in_hindi_download_720p_filmywap.pdf
    • https://cdn.sqhk.co/ropimipaf/liafzut/jusujo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/66ae69e7-397f-4f93-ba95-29da910136ed/brandy_alcohol_taste.pdf
    • http://mobutomamalu.rf.gd/how_to_write_a_movie_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/35b8f1bb-1733-4581-8f41-518dd3311b10/79383112978.pdf
    • https://uploads.strikinglycdn.com/files/4c6ce7b8-85c0-4f4f-b292-348cef76d6bf/nigexizamorubanere.pdf
    • http://fikexole.rf.gd/wikud.pdf
    • https://uploads.strikinglycdn.com/files/48e5a55d-2607-4ca7-ad61-50d068935bdb/worm_empire_88.pdf
    • http://juborekif.atwebpages.com/disney_piano_sheet_music_free.pdf
    • https://uploads.strikinglycdn.com/files/87ece0ab-120a-4dcf-8adb-58e5620186eb/vizio_e470i-a0_service_manual.pdf
    • http://semiwexojexudu.epizy.com/worelat.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f61e.bin
46c4f8ff37c0cd0dac452d793fd6ec0ebe12e80b8257636b449814faee0058db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF61E 5592 bytes
font_01_sfnt_off000108ee.bin
9bbf4daa221322f90f61c89bc69f195f5acd064e387f5a224f1cea54ce7236e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108EE 11128 bytes

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