Malicious PDF — malware analysis report

Static analysis result for SHA-256 c882ce9bbdc86b71…

MALICIOUS

PDF

74.6 KB Created: 2021-05-30 07:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c1907d5bb36315b5f4e1d4aa13076f46 SHA-1: 1394adba5a49415844086f47f5ec599c5fdc132a SHA-256: c882ce9bbdc86b7152f2ad0691e36799d2b2227adcabce743372191747f0f5ed
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with software downloads, suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, contains text related to downloading software, reinforcing the phishing pretext.

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://vilenefex.ru/strik?utm_term=download+lightroom+mod+pro+apk+terbaru+full+preset PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380682/normal_5ffe6440dab99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5ff20e58ecc82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457332/normal_60407de982777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428078/normal_603079834d341.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478952/normal_6047d8ed992cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459060/normal_5fec06db3f66c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382782/normal_6069e2a88947d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/06ac3064-95e9-48a6-9a63-ac30189d42fc/silazinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3baef3c4-ec3b-47e0-b52f-5c9a40102aec/23237889172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ac6d70-e575-4c20-84a1-185c71d24186/sodal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa2952c5-8075-4c4d-af68-88318a72e6cd/86761343569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9beb36e-4d64-463d-a9c6-8dcc5c9062db/73058822104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc972f86-481d-4872-a8b3-5f14c11ee6c5/kesos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0809d1f1-b5c5-44de-a247-efc29fcf9b4f/power_cooker_8qt_pressure_cooker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e859799-fcdb-4bd9-811e-047fd6e16a8a/how_much_do_disney_characters_make_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b0f871f-734f-4ce4-99a1-5017d20195d8/golukiwupetonomupuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c19b009d-f2d2-43e3-ba37-86ae18076765/what_are_alexa_commands_for_sonos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29dc8b5a-ba9d-4dbc-8b1a-a909c887b6b4/33446567341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b130630-e0e9-47cc-bad8-29756fadb489/the_echocardiographers_pocket_reference_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46e8d506-c27c-476a-b6c4-8247774f83c3/pofetikijusobidakamip.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 5748 bytes
SHA-256: 241036b5a6ba6067b8a1ad1f649848878f857a37ef5b0f3fe02a2d6e7026abeb
font_01_sfnt_off0000f7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FE 10756 bytes
SHA-256: db4e199fa880032edf47f5065ca0e4eaad09542d577ba3ca11a042a5094483a8

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