Malicious PDF — malware analysis report

Static analysis result for SHA-256 b696f824a29f0914…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 14:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9972686fe7feb4ef007a327fbcb88f43 SHA-1: 2b282d80fc2eae5cea046f421541cbabceeec5ef SHA-256: b696f824a29f09140ac2f29e2322986a3b736d0006c94f8a680428c66770879e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate that this PDF is part of a link farm designed to direct users to malicious infrastructure. The primary malicious IOC is the ttraff.com URL, which likely serves as the initial point of compromise.

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=pesquisa+qualitativa+e+quantitativa+livro+pdf
    • http://files.bmwenthusiast.ca/uploads/1/3/0/7/130739789/8949641.pdf
    • http://sabupa.councilofgiants.co.uk/uploads/1/3/0/8/130874431/xetujofudi.pdf
    • http://files.gmarinaccio.com/uploads/1/3/0/8/130874495/volepi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/8789494439.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/biwosilodalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/hockenbury_discovering_psychology_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/pdf_fillable_form_data_in_fields_disappear.pdf
    • https://cdn.shopify.com/s/files/1/0432/6549/1107/files/tovazilawikolusoso.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/airy_stress_function_example.pdf
    • https://cdn.shopify.com/s/files/1/0439/0181/2888/files/locofuria_comics_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7203/files/7236517845.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9259/files/fogugasefefululogununa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/photoshop_undo_multiple.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/barron_toeic_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/pearl_necklace_lyrics.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_off00006c2a.bin
88d6d3f120bfb0a28b6202f10f14b26c7ec6bac5812f208ad60ed0d70a360a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 5220 bytes
font_01_sfnt_off00007dfc.bin
8e835290c6d2d8233101dddc7f08b0624af0b8d9e30ff03acf6688ead01f2ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFC 12512 bytes

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