Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5861502ff517413…

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 11:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be876f9303e4498bc7d2e83d8e530e32 SHA-1: e6501e69ba5d70cae024e901b076cbee0f46c527 SHA-256: f5861502ff517413601e5975e1eb5b6838429b4b243144d4c7ce7fe0c966e618
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. It contains numerous embedded URLs, with the primary one being https://kuzutuzo.ru/award?keyword=cultivo+de+calendula+pdf, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=cultivo+de+calendula+pdf
    • https://fowazepare.weebly.com/uploads/1/3/1/4/131406063/dabejo-karija-lekebofamewe-niwefalemapir.pdf
    • https://cdn-cms.f-static.net/uploads/4481273/normal_600f69b55c35c.pdf
    • https://gikanirirexenad.weebly.com/uploads/1/3/0/7/130776133/0cdf7da1.pdf
    • http://repair-kompov.ru/lab_rats_2_walkthrough8lvv9.pdf
    • https://static.s123-cdn-static.com/uploads/4473047/normal_5fffa578ed029.pdf
    • https://pozusope.weebly.com/uploads/1/3/1/4/131453674/dexesizovugas.pdf
    • http://vknart.xyz/rigikuxamodunipefadasufeyet.pdf
    • https://static.s123-cdn-static.com/uploads/4403129/normal_5fe5e97c141e4.pdf
    • https://cdn-cms.f-static.net/uploads/4376088/normal_604ed3bed43d9.pdf
    • http://confirmyourverifiedbadge.com/2000w_pure_sine_wave_inverter_circuit_diagramyxho8.pdf
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5fe8deed38ef6.pdf
    • https://static.s123-cdn-static.com/uploads/4454056/normal_5ff0daf97840e.pdf
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/7fd3a44da0.pdf
    • https://cdn-cms.f-static.net/uploads/4371266/normal_603866c53d203.pdf
    • https://dipakinujudisil.weebly.com/uploads/1/3/4/4/134468351/fivixojofiw.pdf
    • http://supernefritroller.xyz/89090000129g32n6.pdf
    • https://static.s123-cdn-static.com/uploads/4420029/normal_5ffcbbc77052f.pdf
    • http://all-host.site/wowizevodututebukinwpjwc.pdf
    • http://copyright-central-media.com/85907579968o0roj.pdf
    • http://topplafond.xyz/zig_ziglar_power_of_self_talkhz0lg.pdf
    • http://zalavsky.ru/43921177185155e7.pdf
    • https://cdn-cms.f-static.net/uploads/4382966/normal_5fd6da145e12d.pdf
    • https://lefoxidegej.weebly.com/uploads/1/3/4/5/134526886/jomazakiwuxajetawef.pdf
    • http://tortomsk.ru/dinebodejukepidutofimedajzx6.pdf
    • https://fizozedodid.weebly.com/uploads/1/3/4/4/134484686/e89bac70.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000eda2.bin
0241b7513760dcd3ff2d677b865caeecf3fa64092aba5d0f5554681d03989c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 4840 bytes
font_01_sfnt_off0000fe34.bin
3c4bc0ed387a64759f94d3c36c3266e16688fbb4655b325a33fc38a143a7b28a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE34 11948 bytes

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