Malicious PDF — malware analysis report

Static analysis result for SHA-256 92255a81099dcceb…

MALICIOUS

PDF

42.9 KB Created: 2020-11-02 15:14:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5369439b1d75bea0b0f10e6b5155daff SHA-1: 2421a30bc229a22df549079db0487dfc278e0326 SHA-256: 92255a81099dcceb4f9154a46bde91624a4772a293f94284344184b52d0ca9cf
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=tomarts+price+guide+to+hot+wheels In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/fresno_county_housing_authority_contact.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/mawenafeduroximeziva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b1dff5-7ac5-4efd-95b0-1a930200b090/kezejavavutikagapuxowab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5763668-71eb-4b32-93b6-2906008b68f1/molalugoxozapexulunamozaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2aadb7b-2a44-4943-bacb-005068ccb101/guess_the_brand_level_199.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/prim_hunger_games_death.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/majusizasurale.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/why_did_the_rug_roll_up_around_his_girlfriend_math_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0558f5-3c18-4d68-9977-356dca00eaf3/makiguxixefenob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e7b78c-151c-4cd8-9f7e-31228fe570be/20896897690.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/mathematics_and_computers_in_simulation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf242b45-a55d-4287-a8ea-2e1b3231d9ed/intel_centrino_wireless-_n_2200_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9609/5397/files/kezogusadubutav.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_off00006833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6833 5528 bytes
SHA-256: e2339ba15fb0dd56bcdc37a23a24d5ef7ef5a70650aceaf33d96cd830bedee0b
font_01_sfnt_off00007ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADA 10604 bytes
SHA-256: 27e96ca4b4c32a7d09f06eebc85faec345b5e258721ff5b50fa5282353f6296b