Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30c39282182e727…

MALICIOUS

PDF

76.0 KB Created: 2021-06-01 09:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fb01671811cb923fe297da5fabffd3b7 SHA-1: 53167fd404fa7798e58ac12e5b0fcb78e66aa8f1 SHA-256: c30c39282182e727f6fc1b84dc2520466f8ce0057bc6cbd57d2f130d5e4eb0aa
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 0.9997

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://leonvi.ru/123?utm_term=flutter+widgets+cheat+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445114/normal_6051358e738e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448744/normal_601ff4b822b46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476122/normal_604161b266fa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_60360d0607741.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474720/normal_5ffdb67f2515e.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4497344/normal_60b1c786a95d0.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/40a7fb1c-1ad5-4a70-b7a5-80ae25bea50b/21044708187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c4f20d-3b07-4306-821d-49ca4054d156/71111186749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04488644-7208-454d-9d53-0b8e9090d379/how_to_make_a_word_form_a_fillable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c60410-4749-4b8a-ba55-9ef08c1098db/similes_in_the_giver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bca127d-3c5a-47c8-914d-16f7108c539a/pofalunemidiwozut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa32a971-a90c-4a31-8a48-c2a1b7086006/80138128270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11d21ab-8c30-40da-b121-656c834ffae7/can_you_have_bubble_tea_when_pregnant.pdfIn PDF document text
    • http://fipivuzigoge.pbworks.com/w/file/fetch/144424437/44774331479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9765561b-f9d8-4bf0-ac90-b9e1896f4d7c/is_plantronics_c054_bluetooth.pdfIn PDF document text
    • http://gudikijuruf.pbworks.com/w/file/fetch/144448830/dewalt_20_volt_drill_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ba75ed5-623c-4997-b26e-959a6f50f97d/mirusesezolefosevijixit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33f903db-c60c-43cb-bea7-a71477d9fbdd/why_is_my_renova_zero_not_hitting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca00c9ae-7c58-4cb8-90e4-16a657834af9/cathy_caruth_trauma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/372da962-a3ed-4d11-a69b-1ff45e420cfc/is_russian_bear_5000_safe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/959c295f-9e4f-40f8-b7e1-a1586f5c81ce/58696522350.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_off0000e914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE914 5248 bytes
SHA-256: 387d272ea90db381829f4f38a4f690f5e1b090ee0462d54f604865d699988ad1
font_01_sfnt_off0000fafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFE 11564 bytes
SHA-256: 292dd19df948d362e79210a9487f650c086c07c0f8a922df225b74523ec85bf1

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