Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf46ab70065f4efe…

MALICIOUS

PDF

80.5 KB Created: 2021-03-16 22:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb853603d072ff0541a8122bfecefad3 SHA-1: 563f903064314e33f88ecb1d806ae40b7a6610ea SHA-256: bf46ab70065f4efe40bb9ba6bd786b690314fdd0bb5218caa9f8ae1cae4e4350
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. An external URI pointing to 'resalured.ru' was extracted, which is likely the malicious destination. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of an embedded malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=trevor+st+john
    • http://wopexobow.mywebcommunity.org/aqua_logic_goldline_controls_manual.pdf
    • http://donumoraf.iblogger.org/dell_790_sff_dimensions.pdf
    • http://tramlaweq.online/gemuzijozisavanuwogods74.pdf
    • http://ranupila.mywebcommunity.org/how_to_program_steering_wheel_controls_pioneer.pdf
    • http://inostrana.com/billionaire_casino_free_coinscqvl8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/baf28360-164a-4191-bbaf-a6d5d6eefc1a/pagajoda.pdf
    • https://1639490a-f715-481e-9fb1-af38d332269b.filesusr.com/ugd/a59130_4e427eff010d4f5dadd0ce5a90cf5725.pdf?index=true
    • http://suzufesa.epizy.com/america_english_video.pdf
    • http://gawejufabobepi.epizy.com/terolezufujasapalujezijof.pdf
    • https://uploads.strikinglycdn.com/files/aafbd6a3-21ae-4a56-bba1-dea4903dd12c/calligraphy_learning_book.pdf
    • http://pimimozoji.myartsonline.com/pulp_fiction_bible_quote_samuel_l_jackson.pdf
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_8f2a01c7a4f3415aa6aaff97b820fe78.pdf?index=true
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_2472b45dbd084b5eae4d37ebf477ad6a.pdf?index=true
    • http://jatamez.epizy.com/adobe_photoshop_cc_2018_highly_compressed.pdf
    • https://uploads.strikinglycdn.com/files/b26c6353-a037-4095-b4ed-993b7b22f7fc/pivavozuxor.pdf
    • https://2f8a6ab9-e864-4757-b083-6627a13f4c48.filesusr.com/ugd/405339_f8ec58c340af4498b21a1c76cede518c.pdf?index=true
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_d575891cc53340d8b5e37de57acb75c7.pdf?index=true
    • http://futikuzita.onlinewebshop.net/the_organic_chemistry_of_drug_design_and_drug_action_download.pdf
    • https://uploads.strikinglycdn.com/files/d4331d01-1925-47cd-87ca-482b0219913f/16218941554.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_off0000fed2.bin
a7ba4b8a430bd7819878813f7ddef13937ab369fdd20b35ee3c16f3edbb29819		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED2 4616 bytes
font_01_sfnt_off00010e88.bin
7efb2c58dc8283f85162b46ea4ba7ec119caff89f230526e33626f7d9164dea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E88 11796 bytes

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