Malicious PDF — malware analysis report

Static analysis result for SHA-256 69de51dc13189f9e…

MALICIOUS

PDF

40.9 KB Created: 2020-08-08 13:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad4df804b4445ca4e0a19c46563fd63a SHA-1: e2c49e97675f07cbc4214bb81998fabb302df0ed SHA-256: 69de51dc13189f9e2bd99a75845eb25aa50bd3d31bcb1541093d201f04c0eb28
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=borg+scale+pdf'. This link is embedded within the document body, suggesting a phishing or scam attempt. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the primary malicious indicator is the redirector URL.

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=borg+scale+pdf
    • http://files.davidsalter.net/uploads/1/3/1/1/131164063/56888.pdf
    • http://rubume.kimtarrestaurant.com/uploads/1/3/1/8/131856372/rozovevo_newadovujolebu.pdf
    • http://files.paolospazzini.com/uploads/1/3/1/4/131483108/6370149.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6531/0374/files/cea_reimbursement_form_2020_18.pdf
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/mulataraja.pdf
    • https://cdn.shopify.com/s/files/1/0436/1938/5502/files/kovidapelekesate.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/zero_dark_thirty_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/zukumedunuzet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/mufibabozegiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/63305267709.pdf
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/xosolonupamitasimoj.pdf
    • https://cdn.shopify.com/s/files/1/0443/0397/4556/files/prentice_hall_chemistry_laboratory_manual_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0409/0777/files/91033682757.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_off00006189.bin
959f97ab0bdc59986cbd9baca106a5bf842016f0f6b443aae23b75af7bd79560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 5372 bytes
font_01_sfnt_off000073e5.bin
e81c5d7bec5eba0338cce28cb3e48a6130c1d5b645977b6727b9141be23dca18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E5 10348 bytes

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