Malicious PDF — malware analysis report

Static analysis result for SHA-256 a42c41d750520e7d…

MALICIOUS

PDF

79.4 KB Created: 2021-06-01 02:05:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a2fe1304c1d8ef8d079b3f77881f417 SHA-1: 759d9ce7b9791747849a1db8f81469de4085d345 SHA-256: a42c41d750520e7d23523dad3e1d951a68e019d77b7db578ebcb29cdee5615aa
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and Trojan characteristics. It contains an embedded URI pointing to 'garglob.ru', which is highly suspicious. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://garglob.ru/pbw?utm_term=family+feud+fast+money+questions+2019
    • https://cdn-cms.f-static.net/uploads/4369185/normal_5fea24639def7.pdf
    • https://cdn-cms.f-static.net/uploads/4491688/normal_604dcd13b53c2.pdf
    • https://static.s123-cdn-static.com/uploads/4410415/normal_60023bd77f443.pdf
    • https://kaxamutibe.weebly.com/uploads/1/3/5/3/135348628/vafadajonakokeba.pdf
    • https://rugomekedakore.weebly.com/uploads/1/3/5/3/135302214/lowuripup-norimujexadi-gobadolatego.pdf
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/6016831.pdf
    • https://vojufutevale.weebly.com/uploads/1/3/4/5/134521456/merufusozamo_rovovugosife_metesufon.pdf
    • https://jodavetofa.weebly.com/uploads/1/3/1/4/131438562/9443495.pdf
    • https://lexapokugivida.weebly.com/uploads/1/3/1/8/131856754/dagetexedifaga-sizefetafebov-sowamozodaz-larusofozabazu.pdf
    • https://gozulisob.weebly.com/uploads/1/3/4/0/134012313/sujeluna-jaguve-buwoteb-sizoguvudute.pdf
    • https://cdn-cms.f-static.net/uploads/4481402/normal_6065d0b14bd29.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1060c6e2-8f81-41d1-a514-46d466f5bed0/simplicity_riding_lawn_mower_parts.pdf
    • https://uploads.strikinglycdn.com/files/a0af478e-cdec-4591-af30-599a7afc530f/99038823969.pdf
    • http://lugozamuxika.pbworks.com/f/18780186917.pdf
    • http://wuxikadafi.pbworks.com/f/13151026952.pdf
    • http://jajisaparev.pbworks.com/f/download_adobe_reader_professional_7_free.pdf
    • http://xetibubib.pbworks.com/f/86756844965.pdf
    • http://pezeliv.pbworks.com/f/rna_transcription_worksheet_answers.pdf
    • http://kokoxudalux.pbworks.com/f/puppy_for_adoption_near_me.pdf
    • https://uploads.strikinglycdn.com/files/6953b9d2-5f34-40b0-9874-1b2a257e5468/17287446550.pdf
    • https://uploads.strikinglycdn.com/files/b9e24aa9-25f4-4ef7-bffd-16ff91e5bcb5/82959694566.pdf
    • http://didaneguk.pbworks.com/f/cen-tech_battery_charger_4_in_1.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_off0000f82c.bin
8eac0b5fceca8f3b61ee50796ffed41033ad8fb719ac0bb4a0fcb814b2dac74d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 5624 bytes
font_01_sfnt_off00010b48.bin
7c95d8c06af19e82b6e813643c16ab8b914e75ad20d146479a5b5c09d80ea850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B48 10920 bytes

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