Malicious PDF — malware analysis report

Static analysis result for SHA-256 03263c62ab2205c2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 21:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d88415ea0f73a8235f1099dce34150f SHA-1: 4b046f6a99cc661d00415fc59b381536b3d13c0e SHA-256: 03263c62ab2205c227223dada4e589104a8b9dd9107be92cbc559d5a3d204b36
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, identified as 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to movie downloads, suggesting a lure to entice users to click the malicious link. The presence of numerous PDF links, many pointing to benign Shopify domains, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination. No scripts were extracted from this sample.

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.ru/pify?keyword=bengali+khiladi+movie++480p
    • http://files.michelepowles.com/uploads/1/3/1/4/131408153/gerapanujokadigo.pdf
    • http://files.davidmossac.com/uploads/1/3/1/4/131410818/jamazof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0739/2413/files/pharmacotherapy_casebook_instructor.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/digij.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/retinosis_pigmentaria_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/64730023018.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/adyashanti_falling_into_grace.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/alimentacion_enteral_por_sonda.pdf
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/ledevewopixidazuxapaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/black_friday_full_movie_filmywap.pdf
    • https://cdn.shopify.com/s/files/1/0451/6413/4554/files/ladumevi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/rupofat.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/lasagna_sheets_recipe_vegetarian.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/broiler_chicken_feeding_schedule.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cb3.bin
33ba5c6b7b9e9c16a9da77f727dfb6566b39b7a51fa48d822d569185fc445355
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5696 bytes
font_01_sfnt_off00007001.bin
49be2868de7c1ec4a52d0945a20b18267e65f463aee0cd5461ec04e74b7bf109
pdf-font-stream PDF embedded font (sfnt) at offset 0x7001 15044 bytes