Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3daaf48aa8f09c6…

MALICIOUS

PDF

44.4 KB Created: 2020-08-18 13:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e412a975c5626c96d0f3b103c42a2f2a SHA-1: 7ebd5024f16280077092751c31cdf2705eeb4269 SHA-256: d3daaf48aa8f09c6f7119144a09c7d704786c562bd5d59c09fd2ead210508ed0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains numerous embedded URLs, including a primary malicious redirector at 'https://ttraff.ru/pify?keyword=future+fight+beginner+guide+2019'. The presence of a large number of links, many pointing to Shopify-hosted PDFs, suggests an attempt to manipulate search engine results or distribute malicious content through a seemingly benign document.

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=future+fight+beginner+guide+2019
    • http://xiniw.wordplaygifts.com/uploads/1/3/0/8/130874063/1911382.pdf
    • http://files.cageymoon.com/uploads/1/3/1/3/131380177/160989.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdf
    • https://cdn.shopify.com/s/files/1/0431/3491/0618/files/46372230651.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/van_halen_diver_down_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/characteristics_of_quantitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/hampton_bay_ceiling_fan_replacement_parts.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/fozerotatatizikezo.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/chronicles_of_ancient_darkness.pdf
    • https://cdn.shopify.com/s/files/1/0446/2634/6147/files/anand_movie_ringtones_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/61263499951.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/xuluzepexuvogobubuge.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/gitagenesuforovokukesalug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0445/5694/3524/files/argentina_visa_application_form_in_nigeria.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f6a.bin
1b15e32f4b30f657e19100bf2f52568fea0f06624692a3c7d483679fd004c1ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 5328 bytes
font_01_sfnt_off00008189.bin
d0676fe1a34d66de6207da28d6a9525cd488b16de8a72d50a79e0e7588645acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8189 10292 bytes

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