Malicious PDF — malware analysis report

Static analysis result for SHA-256 306ee96bd6ba4d77…

MALICIOUS

PDF

118.2 KB Created: 2021-03-20 19:22:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f959af84f2f9a537c813e38a63b4767 SHA-1: bf7e54d6c50e0d5b2a5b165e4feb6e190ee80d1a SHA-256: 306ee96bd6ba4d775428dfd5c5f38d97ebeee2d37e68fe53e839924b306baca9
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing or malicious document, including a link farm and a ClamAV detection for Pdf.Phishing.Trojan. The embedded URL 'https://bologen.ru/wix?keyword=hot+wheels+showdown+mod+apk' suggests a lure to download a game mod, which is a common tactic for phishing or malware distribution. The presence of multiple external links, some of which are benign, indicates a potential attempt to obscure the malicious intent or to generate traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=hot+wheels+showdown+mod+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b5526579-b22d-45a0-8251-9885a72cf3eb.filesusr.com/ugd/0cd019_9251411229854df088709fd21e329d2a.pdf?index=true
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_7d069ff855694f0e8c1f557b1d9b4e4e.pdf?index=true
    • https://s3.amazonaws.com/navoburarovada/88139464141.pdf
    • https://ebed6276-6372-4ddf-adad-9a0fa504b99f.filesusr.com/ugd/805d2a_1a1817495b2e451e947bfe0c925ac78d.pdf?index=true
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_6b0a37b59b124db59f72e56d03d26823.pdf?index=true
    • https://s3.amazonaws.com/suxugipipolazog/autonics_le4s_timer_manual_espaol.pdf
    • https://s3.amazonaws.com/tobaziw/vavonoras.pdf
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_512fbc7b754f4574a18e15a98a61bb8a.pdf?index=true
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_01ad5ac7509d4c7789ba32df9552d93a.pdf?index=true
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_9de1ca33bdec4b1ca144d14a71394a29.pdf?index=true
    • https://76f5a3e5-08d8-4581-9975-6c1b933a1845.filesusr.com/ugd/dbbd16_0cf53b8597954e8ab20d8411683b04ac.pdf?index=true
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_a0d43e2a433e4b14896516c0119f59e0.pdf?index=true
    • https://a819be37-316e-4347-83bc-b067fb6953c8.filesusr.com/ugd/d5662a_ac43b7b9a94b461c81f935f717fecb75.pdf?index=true
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_9984e2564aae4dadbe0b57f3f848a0af.pdf?index=true
    • https://s3.amazonaws.com/muxegeza/58132232077.pdf
    • https://s3.amazonaws.com/nisoxow/negojujutajolak.pdf
    • https://s3.amazonaws.com/rupatojuko/2005_can_am_outlander_400_service_manual.pdf
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_7e7943e1b58741bba280d56e34fd288f.pdf?index=true
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_1c50af79c26c49ddb51d811644af48e2.pdf?index=true
    • https://s3.amazonaws.com/fizaxo/5_3_1_2nd_edition_ebook.pdf
    • https://fa0867c9-8cf0-46f9-bfae-aad8e49c21f3.filesusr.com/ugd/cdba2c_7c7bb7720ede4e00b4aaa971c538d425.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de72.bin
c53a95a8d1e83c019992b9a7a1288d2a1de6928b7cb02259f936b5916edaeaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE72 57816 bytes
font_01_sfnt_off00018c9c.bin
e6affef10df0c412e54cda1a36f69e41555ccae222080dcdf72b46a0228f885b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18C9C 5220 bytes
font_02_sfnt_off00019e42.bin
75fc2c855e9dce0f3fc15bacbce76d64d207cd77e233baba418851371aa9d4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19E42 14188 bytes

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