Malicious PDF — malware analysis report

Static analysis result for SHA-256 b351fa551454ed07…

MALICIOUS

PDF

76.8 KB Created: 2021-03-15 15:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7f7636ddf1357580c88324c2dd36473c SHA-1: 88eb8d88767e17a73735cc4840a8465949633d0e SHA-256: b351fa551454ed0741440e4d6b2d461eae732b6f7a8c07d433fbc4ee42c56ff1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=hot+dog+bush+full+version+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5fe7614853e4f.pdfIn PDF document text
    • http://dokisiz.iblogger.org/50610134319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_600fa0d2a8434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491686/normal_5ffdb9be71fcc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_5fe53d7643f16.pdfIn PDF document text
    • http://pumevudiruxed.22web.org/how_to_use_diehard_battery_charger_engine_starter.pdfIn PDF document text
    • http://kokilubowo.22web.org/cisco_9865hdc_specs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_ed0eee2ba7bc4da2b956fb4ec5b457d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/romance_of_the_3_kingdoms_14_ps4.pdfIn PDF document text
    • https://d5aacb37-8766-4234-9cc8-c2ec3b911aba.filesusr.com/ugd/1e723b_2ec731e4e5fd4d81ba96a3aefff5c9e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/attributes_of_form_element_in_html.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/akiem_hicks_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/98528201846.pdfIn PDF document text
    • https://e590c0d9-b694-44fb-9862-47327b30d8b0.filesusr.com/ugd/89363e_b3904591f9b5454aad7ecd04796fff26.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sivanira/zitorefetozemu.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/torupabasologukuzoxizuji.pdfIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_7cb818dcb46642da91cc5b3e814a9f09.pdf?index=trueIn PDF document text
    • http://runoxujozu.rf.gd/buying_a_house_in_france_guide.pdfIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_965c8021bbe346e78cb87fff42a02591.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefovu/difference_between_rpa_machine_learning_and_ai.pdfIn PDF document text
    • https://5121d360-3808-4f61-aa44-d87cf2d9d428.filesusr.com/ugd/032e8a_6a8d6377f20a4c4da1224c2985d20bc4.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2E 5004 bytes
SHA-256: 54a9e888650a9bdc473f06418e62e47efb6a8fd10a7bbf16c8a39110a9496981
font_01_sfnt_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 10640 bytes
SHA-256: 4e90367647e485316cdb2ef54bc74183211d02babfb03bfc764e5df3a41c1d76
font_02_sfnt_off00010254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10254 16164 bytes
SHA-256: 3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994
font_03_sfnt_off0001174d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1174D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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