Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b6979ddcc4c8a4…

MALICIOUS

PDF

44.4 KB Created: 2020-10-20 00:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a0f6a08a13d9ae280c8d318c61cf18fb SHA-1: 840c568bdd9ced4d3be496350fc40bee83f3207f SHA-256: b4b6979ddcc4c8a4579eba7dd7a17142c282ff0214aeae88000585bc4a649a74
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/123?keyword=dictionnaire+anglais+fran%25C3%25A7ais+telecharger+pdf', is designed to lead users to malicious content. The document also features a link farm heuristic, indicating a large number of external links, one of which points to a potentially benign Strikingly hosted PDF, but the primary redirector is the main threat.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/123?keyword=dictionnaire+anglais+fran%25C3%25A7ais+telecharger+pdf In PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/8853281.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/gerogewupag-fikupejoku-ratobolut.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/gaxozudijejotona.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/8069808.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/1647941.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://uploads.strikinglycdn.com/files/357fcbeb-7e4d-428d-9d0e-7dea632d0f4e/jesepoxapezokefusame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2cbc3ea-179a-44f1-9d41-9edb656cfad2/dofexoned.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da0f292-3340-45a0-934b-e47b2f2bc7e6/maleficent_2014_hindi_dubbed_full_h.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96131ad-25b9-4b4c-a710-e74585485b7f/nerulenawesuzamonim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2794385e-ff5a-4916-83e6-5bd6fe200e47/82626213716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53653667-0cd7-44e5-abed-d6fa9a9f9231/xukosaxivozifazij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f3ab56-6264-47dd-b984-67dd249fd4a9/rosolized.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5ad8049-419d-4bd1-b794-3cfa62272a0e/ziwowusukuzokupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a600694-4edd-48a1-8b4e-9f6c36dfb365/xexar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aa4604b-3e61-4bd6-8959-96df18ef34de/80179559126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9333/4456/files/71702017581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/4919/4917/files/84008797199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4093/9423/files/tarajudigapetijanujoxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8535/5425/files/scribblenauts_unlimited_mods_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/select_worksheet_vba_code.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD 5384 bytes
SHA-256: f35801cca735b8b01884f22a6ee592d5aefb2d7fdcc6edd62e11e59a72638a68
font_01_sfnt_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 11120 bytes
SHA-256: 4a8f5d6d893c5771efc3bfff0e2aaa7e0ef873effa88114dac1b5762d0e581c7
font_02_sfnt_off000093ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.