Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e771aadb835f305…

MALICIOUS

PDF

41.1 KB Created: 2020-08-02 07:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0eff9853c69dcbd8001f9c78e5a60363 SHA-1: dc51bc2693fd987e4cf44b96365e0c819d411d60 SHA-256: 8e771aadb835f305fad9f41de720d2456f698361e9db82f6e8a9b711bc025ba1
152 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.cc/pify?keyword=classic+wow+runecloth+bag'. The document body, though partially corrupted, contains this URL and references 'classic wow runecloth bag', suggesting a lure to a potentially malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute traffic or improve SEO for malicious content.

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.cc/pify?keyword=classic+wow+runecloth+bag
    • http://files.henrysheartarttherapy.com/uploads/1/3/0/9/130969305/nujudejesivo.pdf
    • http://files.mountpleasantsaundersfoot.com/uploads/1/3/1/3/131397981/e038ee.pdf
    • http://files.businessbcs.com/uploads/1/3/2/7/132740343/e9c81eaa854.pdf
    • http://files.nonatruthseeker.com/uploads/1/3/0/8/130814043/gatojosewalezog.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/60014729550.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/lovosoduta.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/mijonumusozinededelorin.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/netetizunepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/tolikezojosafoxazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/xidureko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
    • https://cdn.shopify.com/s/files/1/0432/8144/9124/files/6649113108.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/87510288694.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/bizopatupijefevekugasama.pdf
    • https://cdn.shopify.com/s/files/1/0434/4191/4006/files/xazobuzope.pdf
    • https://cdn.shopify.com/s/files/1/0439/6479/2990/files/all_software_serial_key_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000553a.bin
2f51debe9f30b598cfbb785160d58d79744d952c06f1d851aecc2fcda23ba174		 pdf-font-stream PDF embedded font (sfnt) at offset 0x553A 5200 bytes
font_01_sfnt_off000066f1.bin
bf9a369d551240df7c74d5f3a726077a06d29cb958dae296b805eb15a65636c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 9984 bytes
font_02_sfnt_off00008920.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8920 4324 bytes

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