Malicious PDF — malware analysis report

Static analysis result for SHA-256 93dd977ac9dd40ff…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 18:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42f63b63c726f7fc66f230e088fc874d SHA-1: 998cbc84d968ba54f8782aefab3a55d94d7042c8 SHA-256: 93dd977ac9dd40ff182d9cfc22cbedf479272d59482982301c08ccc7b839a172
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fundamentals+of+graphics+communication+6th+edition+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. The presence of a PDF link farm heuristic further supports this, suggesting a technique to artificially inflate search engine rankings or distribute malicious links. No scripts were extracted from this sample.

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.cc/pify?keyword=fundamentals+of+graphics+communication+6th+edition+pdf
    • http://files.tweedvalleyhapkido.com/uploads/1/3/0/8/130874422/011f82f93.pdf
    • http://files.hisandherimprovements.com/uploads/1/3/0/7/130775431/e347647c.pdf
    • http://files.togetherincounselling.co.uk/uploads/1/3/0/8/130813095/254556af50a38b.pdf
    • http://files.cavanaghart.com/uploads/1/3/1/4/131455680/ac3c935d64.pdf
    • http://files.percivaleast.com/uploads/1/3/2/8/132815968/bigawusex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9715790575.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/simopexexoputuxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/rojagupazulavusew.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/63528017659.pdf
    • https://cdn.shopify.com/s/files/1/0439/2756/8552/files/tegafozu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/kajuzitugonixubufewo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/34357170150.pdf
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/70072984429.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/system_dynamics_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/jugujigebekogijapavuxube.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/james_stewart_essential_calculus_2nd_edition.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_off00006310.bin
853ea73607442d59d6930cab246182e1adf2bf09875c91e37de11e9b48faf69d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 5680 bytes
font_01_sfnt_off0000763c.bin
2d03d3f9d2ef5fa0319c120e021ff82e278866f63d4a0d372d6a3ae7b93cfb0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763C 10932 bytes

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