Malicious PDF — malware analysis report

Static analysis result for SHA-256 02576b94586c6bd8…

MALICIOUS

PDF

279.4 KB Created: 2021-03-08 22:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8745e513a626d5e7a74b10727ffd94ed SHA-1: fb4cf1ea5a84448fa51240c78a5403805956095b SHA-256: 02576b94586c6bd81b32bb6df3418ac31df9a749963cd12766c2dcc75b66487e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers flagged this PDF as malicious, indicating a high probability of malicious intent. The document body, though partially corrupted, suggests a lure related to a 'modified ashworth scale for spasticity pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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://bologen.ru/award?keyword=modified+ashworth+scale+for+spasticity+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420454/normal_5fdc9f837124f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5fd335f61783e.pdfIn PDF document text
    • https://cdn.sqhk.co/fabokofe/hja2jgc/free_zedge_ringtones_for_iphone_6_plus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5fed1904f0789.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5ff45f5fa8d59.pdfIn PDF document text
    • https://gepemizuwawufak.weebly.com/uploads/1/3/4/3/134335313/9606032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_60298bab34c9f.pdfIn PDF document text
    • http://creditpm.com/660995841648xcd.pdfIn PDF document text
    • https://zusikoxapumobib.weebly.com/uploads/1/3/4/7/134766975/ferorurodijebuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452618/normal_6014b9fbadcf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369912/normal_5ff76fc39f728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376369/normal_600b3b72a8b61.pdfIn PDF document text
    • http://carbackseat.site/c_programming_for_electronic_engineersww6e5.pdfIn PDF document text
    • http://callup.today/wunikafuxnu6da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_6033a47d904b4.pdfIn PDF document text
    • http://dom-bita.org/20267908823ytbxj.pdfIn PDF document text
    • https://cdn.sqhk.co/dajuzafum/jclihhh/my_little_pony_harmony_quest_download_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/6UU40ig/77245697117.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/djfmTcV/i_wish_you_all_the_best_book_review.pdfIn PDF document text
    • http://autokenn.com/mamadeld9pyl.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/7e548cf2-e4a1-4540-ad18-9879851dce17/ryobi_10_table_saw_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56998925-3863-482e-aac9-c4d471b68ff5/30139934277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e000ef-5b35-4faf-a431-f712b832c96d/cbeebies_bedtime_stories_youtube_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9b0493-724f-458f-96ef-c6633f2c3354/11517550851.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_off000407de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x407DE 5440 bytes
SHA-256: a7ced755275e3bd27f05b9d83135f7d36be8c62ccba14199b20f5b26f70a380e
font_01_sfnt_off00041a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41A84 16632 bytes
SHA-256: 0b185b3a77153de0d0c19da347c790f687d9b5900d4958552844af258547649f

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