Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2de8c06e93539c…

MALICIOUS

PDF

70.4 KB Created: 2021-02-28 05:31:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 1176fdf51a1beeec08586640e4e4d2ff SHA-1: 749cc3c8b3b090f97f05b48ef5fb784d4d0ca82c SHA-256: 7d2de8c06e93539cd1a656cca62a645b425144f416b8cbd71f22d5b56f4e62d0
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains an embedded URI pointing to 'https://jumiwimov.ru/wix?keyword=blackhawk+middle+school+phone+number', suggesting a phishing or content-luring attempt. The PDF also contains a large number of external links, indicating a potential link farm or SEO manipulation tactic to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/wix?keyword=blackhawk+middle+school+phone+number PDF link annotation
    • https://cdn.sqhk.co/labifikup/hRWjgzd/luxury_cars_coloring_book.pdfIn PDF document text
    • https://donimafu.weebly.com/uploads/1/3/5/3/135395233/131880.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/ieDLKsD/pac_man_world_2_pc_portable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387226/normal_60082dc07128f.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/ihTibTa/hockey_statistics_excel_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_602cda301cf6f.pdfIn PDF document text
    • https://xebagamalod.weebly.com/uploads/1/3/1/3/131383607/kabemaluvali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418167/normal_5fe1ff744ea3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370319/normal_5fc9418b80455.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/bab5a92.pdfIn PDF document text
    • https://tusemebi.weebly.com/uploads/1/3/4/3/134316443/dadojurazemabigaf.pdfIn PDF document text
    • https://fipugodegiposal.weebly.com/uploads/1/3/4/6/134687615/3651794.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/batiku/difference_between_sociopath_and_psychopath_yahoo_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/order_of_operations_maze_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/76705652543.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/pokemon_fire_red_for_nds_emulator.pdfIn PDF document text
    • http://rawupegidozu.rf.gd/mijevete.pdfIn PDF document text
    • http://gopivikanofo.rf.gd/68915315575.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/selujepopufuno.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/wirexinosumesar.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_off0000d6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EE 5660 bytes
SHA-256: b11b1a4fbf3596ee4d831bd1d6b09c7a7eb6aec002f99955f6ae5b693c2cd047
font_01_sfnt_off0000ea09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA09 10056 bytes
SHA-256: 74b0250aa41c8697156d623a2d54e3e8945a2b1c5e238a298b404c08be684b3b

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