Malicious PDF — malware analysis report

Static analysis result for SHA-256 add4d2d24c31c34f…

MALICIOUS

PDF

85.7 KB Created: 2021-05-01 13:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4a07c60127f831396441abf6753e11b1 SHA-1: c19b948942ff8b41ab2297b1e9473dfa01e0bd8f SHA-256: add4d2d24c31c34fc1193ba0de2c2f927c9a6dba27d126a68fc734a6f5094bb0
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://jottigo.ru/strik?utm_term=mr+coffee+iced+coffee+maker+issues PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427300/normal_5fdf468507489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501383/normal_603ead28e7db3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_5fd8defa17039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456134/normal_5fdbe2e5d1328.pdfIn PDF document text
    • http://opencabinets.xyz/fedloan_forgiveness_disabilitylj2aj.pdfIn PDF document text
    • http://ita-bio.fun/fluke_77_series_3_manual8zohd.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/b7af25ec-eeac-420a-aa31-44eacbf97197/werixoliboz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f95e70-feeb-4393-b395-abf70baa4515/how_to_change_garmin_chest_strap_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6451042c-2a76-4b91-a72a-00eca6851d4c/llc_vs_corp_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd6a060-db5e-4a10-8d9c-91b4800002c5/what_pizza_place_has_gluten_free_crust.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c101d45-e720-440a-ab2e-a9c40b6e5a49/how_to_review_your_strategic_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a03f7bf7-c24a-442c-be64-070d9c6bed6b/57113907707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5eb66cf-e274-47c3-9052-293dcb9b5ce4/dodge_ram_1500_rust_repair_panels.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/google_adwords_certification_answers_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb7dc16-df19-4e92-8a0d-5b0e0563a6c9/where_does_the_red_wire_go_when_installing_a_ceiling_fan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/346f295b-d4d2-4d16-b492-7d942552e72a/free_printable_disney_cars_2_coloring_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1bb8a0-d75d-4d14-8350-77aee059ae32/manual_asus_m5a97_r2_0_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5db3665-98ef-4b40-b17b-4cff9cce602c/employees_only_sydney_food_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/bilingual_first_language_acquisition_de_houwer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6491451f-8a61-4e2c-aded-b85f95512618/15193850247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2bf7a0c-cd11-45d4-8b48-5e37d5aaf73d/42036433048.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_off000110df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DF 5204 bytes
SHA-256: 33c24fe8a801ca6eb0d39e92ce97e699cf8a00a44c4fa3085f4ccf51c8ce334d
font_01_sfnt_off0001228b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228B 11280 bytes
SHA-256: 6063be7d8eb7d066c213992ecb1417a7335934323da98db44d318aa735f27365

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