Malicious PDF — malware analysis report

Static analysis result for SHA-256 b149224c787deda3…

MALICIOUS

PDF

47.0 KB Created: 2020-08-14 06:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0743fcd179dd3c752083f9e140d01d91 SHA-1: 7e8327f1994568978a6b9f64a87ea7d337dd90df SHA-256: b149224c787deda33c83d2b255e9bffea5e3286022c86e1b52c91393680b8f31
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack pattern involves luring the user to click the malicious link, which then likely leads to a phishing page or malware download.

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.
  • 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.
  • 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.com/pify?keyword=on+click+submit+form+jquery
    • http://files.blainerobbins.com/uploads/1/3/2/3/132302732/3145647.pdf
    • http://files.kingdomtransformationchurch.org/uploads/1/3/0/7/130738662/1b8a93e8f4.pdf
    • http://files.cfg-ecommerce.com/uploads/1/3/0/7/130776276/kasebulejijewamibabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/sigitikuroxetozekisadepi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/22321408934.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/astm_a572_grade_50_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/blouse_cutting_design_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/96714903099.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/54358146896.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/35084205483.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/91112251113.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8932/files/jugapunogak.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/5552181607.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/three_golden_rules_of_accounting_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0439/1544/4379/files/blue_sapphire_wow_classic.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_off000068d1.bin
fbbbf8962762404acae9b5368b086ccc9f1b11cb8137432f5784a9820c3c41ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D1 5352 bytes
font_01_sfnt_off00007b00.bin
31adb239108712d296f7c64fd252599091ad0ff81eda6fa05ebf60c5482e98e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B00 16740 bytes

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