Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2abd64aa33ab586…

MALICIOUS

PDF

75.1 KB Created: 2021-03-25 19:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2227b9b49d4748d579be83f641ee3d09 SHA-1: 6a122745f7139a1681d9cb777191c51122813581 SHA-256: b2abd64aa33ab586b9284ad5bf55730b876c858205c93de0b3519d553bbba32a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to accounting principles.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=explain+the+generally+accepted+accounting+principles+with+examples+pdf
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5fccf802e9c4c.pdf
    • https://cdn-cms.f-static.net/uploads/4530578/normal_5fd895213a1ba.pdf
    • http://duvejajenivogik.getenjoyment.net/21_cfr_part_11_compliance_checklist.pdf
    • https://munulokepopat.weebly.com/uploads/1/3/5/2/135297381/xexin.pdf
    • https://static.s123-cdn-static.com/uploads/4402478/normal_5feb3695b8948.pdf
    • http://bitipusefotas.66ghz.com/transistor_bjt_bc547_datasheet.pdf
    • https://mapilezije.weebly.com/uploads/1/3/5/3/135322213/48705.pdf
    • http://dojemop.mywebcommunity.org/tony_robbins_awaken_the_giant_within.pdf
    • http://nevidulipegu.22web.org/39511648678.pdf
    • https://static.s123-cdn-static.com/uploads/4450045/normal_5fe0dda2ec6dd.pdf
    • https://cdn-cms.f-static.net/uploads/4380384/normal_6011b029b1997.pdf
    • https://cdn-cms.f-static.net/uploads/4470040/normal_6043884d45ddb.pdf
    • https://cdn-cms.f-static.net/uploads/4391008/normal_6044fe93a4d08.pdf
    • https://pibitodasako.weebly.com/uploads/1/3/0/9/130969140/1388811.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xogamix.rf.gd/84050245483.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/xaxizazomini.pdf
    • http://wenares.myartsonline.com/pixepururakogow.pdf
    • https://s3.amazonaws.com/mefovu/debt_to_income_ratio_worksheet_usmc.pdf
    • https://s3.amazonaws.com/wujapu/raxigadizunifitikaz.pdf
    • http://wedizakur.epizy.com/94537495641.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_off0000e633.bin
563766983d988c6254d23bce1422f87869a4b76ca6c446ba7402a2a99acc33e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE633 5788 bytes
font_01_sfnt_off0000f9de.bin
dfa45f25e49b2b174af524d2605ef928205c3d74266cf580363116d8d5dc6d20
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DE 10720 bytes