Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9513b3e181c705…

MALICIOUS

PDF

80.7 KB Created: 2021-04-06 23:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d85ec1de0b0170b4f92fe129566c2540 SHA-1: e3f0d5f61007eaa0ce574509c6fc0da8a2e8f0ff SHA-256: 9d9513b3e181c705d93aeae80dc387ee1676e5c902d126bb30ca2283c82ca6cc
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, specifically as a phishing trojan. It contains an embedded URL pointing to 'lozipotod.ru', which is likely used to host a malicious payload or redirect the user to a phishing site. The PDF structure and embedded content suggest an attempt to disguise malicious activity as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/123?utm_term=anlage+av+2018+pdf
    • https://cdn-cms.f-static.net/uploads/4489259/normal_6035551c20024.pdf
    • https://cdn-cms.f-static.net/uploads/4416140/normal_604916a096298.pdf
    • https://cdn-cms.f-static.net/uploads/4386089/normal_6015cd34db900.pdf
    • https://cdn-cms.f-static.net/uploads/4415546/normal_601fee977a5f9.pdf
    • https://cdn-cms.f-static.net/uploads/4416326/normal_6022c8ec8da85.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/03a5e8dd-ba37-4ffb-a4fe-0222bbad77eb/domazenovon.pdf
    • https://s3.amazonaws.com/dowavelaxam/88803620605.pdf
    • https://s3.amazonaws.com/tezude/kinibo.pdf
    • https://s3.amazonaws.com/xokebore/grant_morrison_magic.pdf
    • https://uploads.strikinglycdn.com/files/9cc0712a-01db-459e-b581-b670560e0510/46490259810.pdf
    • http://jirunogi.rf.gd/darkness_rises_game.pdf
    • https://uploads.strikinglycdn.com/files/417384bc-ac69-4605-b407-f66d32b25062/95844755056.pdf
    • https://uploads.strikinglycdn.com/files/f5c25e82-8e07-4a2f-87df-555ef63b1e05/34825889666.pdf
    • https://s3.amazonaws.com/dutuzanob/toro_battery_weed_eater_manual.pdf
    • http://nezepipiniwaj.rf.gd/logic_gate_ic_numbers.pdf
    • https://s3.amazonaws.com/wifukedot/creative_sound_blaster_x-fi_surround_5.1_pro_usb_audio.pdf
    • http://bewexenu.epizy.com/29671052769.pdf
    • https://uploads.strikinglycdn.com/files/54344f7c-8dc1-4cd2-9cab-1c4938cd449c/freightliner_xc_chassis_service_manual.pdf
    • https://s3.amazonaws.com/gajakelegeza/33583020778.pdf
    • https://s3.amazonaws.com/pirofopafu/milestone_template_example.pdf
    • https://uploads.strikinglycdn.com/files/f2a1d1d9-73eb-43d4-9752-bd4515a14699/21591035894.pdf
    • https://uploads.strikinglycdn.com/files/7fc3036c-2b42-4b34-b9a9-4144a7c83668/31038952640.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee04.bin
6d968c6934b4ab11e01bd0b1a24c46714b652a6aa053a48ed69a016e1206a900		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 5056 bytes
font_01_sfnt_off0000ff47.bin
d062074edb8eb8f8ff31f52f256c868920fd8e38197e97b2831c0f26cfcd05f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF47 11600 bytes
font_02_sfnt_off000125a3.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125A3 4324 bytes

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