Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c087ece7b7760b…

MALICIOUS

PDF

75.6 KB Created: 2021-04-01 02:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6372396f59c452da9545061e5551dbc SHA-1: ddc8d4fa7635f24bfd5e3bf6dc528f99a2fdc895 SHA-256: 68c087ece7b7760bf3cca5f8393f67553fd039fd944572fcaed281443206d15d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, one of which, 'https://botokaw.ru/123?utm_term=automated+trading+services+guidelines', is presented as 'Automated trading services guidelines' in the document body, suggesting a phishing or social engineering lure. The presence of embedded URLs and the nature of the detection point towards a phishing attack, likely using a spearphishing attachment vector.

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://botokaw.ru/123?utm_term=automated+trading+services+guidelines
    • http://glawerry.online/96625055374wvx78.pdf
    • http://8gusevshop.space/camouflage_skins_in_fortnitexe4bf.pdf
    • https://petizigosi.weebly.com/uploads/1/3/4/9/134903326/4711965.pdf
    • https://wirevoge.weebly.com/uploads/1/3/1/8/131856771/1935347.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • https://xenesadu.weebly.com/uploads/1/3/0/7/130739949/2466254.pdf
    • http://jabisin.22web.org/51271053715.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8e12fe21-47c1-448c-af9e-883e7c84523b.filesusr.com/ugd/52ac5e_5c9d8c4cf77340ada0324b8d84ca6ca7.pdf?index=true
    • https://s3.amazonaws.com/zidosozawok/35978848518.pdf
    • https://s3.amazonaws.com/zumezeviwakiz/81587267126.pdf
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_0fee4253b56e4c7db8dc1e0d9a747d5c.pdf?index=true
    • http://zikituxepori.epizy.com/92004613486.pdf
    • https://s3.amazonaws.com/vavejijitatofu/46191278589.pdf
    • https://s3.amazonaws.com/bifadiwuwileji/intentionally_false_report_crossword_clue.pdf
    • https://s3.amazonaws.com/vukusa/what_are_powerful_coaching_questions.pdf
    • https://s3.amazonaws.com/wivunonovef/best_scroll_saw_blades_for_intarsia.pdf
    • https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_966b6aa861104a67be103250511cc7ce.pdf?index=true
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_d0e717fb6a5a4b048ed20eff89c8eefb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb1.bin
9e4647c1b7808900ef1741d2b0f049ae1c37644c7b63f27c72fc32a7322f16a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 5308 bytes
font_01_sfnt_off0000fdad.bin
ba204202cc77658326dd18428260f254720bf93a4cadbb7537e7060417e6ad7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAD 10448 bytes