Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9dc5b4f5c540589…

MALICIOUS

PDF

77.8 KB Created: 2021-03-30 06:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93ed4b53077cf10636870bb80169343e SHA-1: 2a1c84af0b334bb641cd5c470ab2f95a594ab5ee SHA-256: e9dc5b4f5c540589a1229bd972144983dc1ffc15e5ddfffc8a08a4dfd453a3de
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a payment redirection lure, likely intended to trick the user into clicking an external link. The ML classifier strongly flags this PDF as malicious, and ClamAV also detects it as a phishing trojan. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://zajinet.ru/strik?utm_term=food+safety+modernization+act+pdf
    • https://bapumuper.weebly.com/uploads/1/3/1/1/131164114/kasawajixavil-jisadetukit.pdf
    • http://luluxot.iblogger.org/anova_de_medidas_repetidas.pdf
    • https://cdn-cms.f-static.net/uploads/4495402/normal_602b9812d7faa.pdf
    • http://javiwovaxaduza.22web.org/40259499324.pdf
    • http://dugabepi.22web.org/35897132405.pdf
    • http://zufunepel.iblogger.org/710785466.pdf
    • https://dopapebo.weebly.com/uploads/1/3/4/8/134870178/gixazete-vediwizezenepet-ritumofavusat-kajobofusite.pdf
    • https://cdn-cms.f-static.net/uploads/4408587/normal_6032a0ce2e0ed.pdf
    • https://fogojokiverowur.weebly.com/uploads/1/3/0/9/130969702/xefusen_jafitax_xofifeg_finir.pdf
    • https://bopifodefow.weebly.com/uploads/1/3/4/3/134383970/2043997.pdf
    • https://cdn-cms.f-static.net/uploads/4450156/normal_60278ae1e3498.pdf
    • https://pexigupor.weebly.com/uploads/1/3/4/9/134901766/geridoj.pdf
    • https://cdn-cms.f-static.net/uploads/4409123/normal_605acc53eb963.pdf
    • http://kanudivuvim.iblogger.org/building_construction_materials_and_techniques_by_p._purushothama_raj.pdf
    • https://puwevifu.weebly.com/uploads/1/3/4/4/134465284/lunezik.pdf
    • https://xonufixusunex.weebly.com/uploads/1/3/4/6/134610533/mofivupuxupakem_varokilusap_sopux_pumomomiw.pdf
    • https://cdn-cms.f-static.net/uploads/4418796/normal_5fe7e89f8b63f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xuvafojufiwel.epizy.com/pc_bluetooth_software_xp_free.pdf
    • http://leduvusiluvev.rf.gd/807617917.pdf
    • http://gufogima.epizy.com/hansel_and_gretel_movie_2020_explained.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_off0000f2bc.bin
3c0814d0866a9fd7243330cabfea50264de5d17e15cc35ab1e6aa5b50f4f8d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BC 5376 bytes
font_01_sfnt_off00010508.bin
691ca8fa709c07d24e12795e3c135450a3cbe0e531afc96c8e30f3baf86d8a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10508 10812 bytes

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