Malicious PDF — malware analysis report

Static analysis result for SHA-256 d043271a652a0576…

MALICIOUS

PDF

58.8 KB Created: 2020-08-02 04:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e49a823f66490b02713cab0d87612bc9 SHA-1: b49ac727cc4ef5471489f56444080ee07808e973 SHA-256: d043271a652a057694c9155b0583ecbe239cfe0dff13eda47674b58b9f0f5bb1
154 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 a PDF link farm, with many links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to redirect the user to malicious infrastructure.

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.com/pify?keyword=weather+underground+ridgecrest+ca
    • http://files.pauladixonphotography.com/uploads/1/3/0/9/130969855/3a7f0f24edfb.pdf
    • http://files.spgoldenbear.com/uploads/1/3/1/4/131436967/321191.pdf
    • http://files.wakefieldmeadows.org/uploads/1/3/1/4/131407226/gebezow.pdf
    • http://files.mathsthroughstories.org/uploads/1/3/2/6/132681343/9016359.pdf
    • http://files.dariusyoga.com/uploads/1/3/1/4/131455475/wimarapuxafa_foxeb_nuxowi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/98489130461.pdf
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/35244135659.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gekubamunanapomokavonata.pdf
    • https://cdn.shopify.com/s/files/1/0447/6112/0919/files/clicker_heroes_import_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/14049271834.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/prima_strategy_guides.pdf
    • https://cdn.shopify.com/s/files/1/0429/0461/7119/files/86371537061.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/18695844222.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/58303790846.pdf
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/3540861033.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/busapewuforaze.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/18205810451.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0111/files/zipila.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_off00009d8c.bin
6478d4f12805c47140c26becd303538e335c86c399e47b77d0ab4cb739c904c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8C 5180 bytes
font_01_sfnt_off0000af34.bin
6c157dcc5f46f2893aba21b4f931e227a73434cc76f5c8922558c40afe8e77c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF34 14860 bytes