Malicious PDF — malware analysis report

Static analysis result for SHA-256 9994b70845efd14f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-15 06:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42cca464611c0c8b1ee135e1fe3a6072 SHA-1: cf4868a84f779c42b8d9a5039ac3fd9e85f070bb SHA-256: 9994b70845efd14ffb06193801c5c874f3cd36f5cfd09f3f1c110df48199c857
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bed+bath+and+table+deer+sheets'. This indicates a phishing or malware delivery attempt. Additionally, the file exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body is heavily obfuscated and contains the malicious URL, reinforcing the phishing or redirection intent.

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=bed+bath+and+table+deer+sheets
    • http://files.aysenurguler.com/uploads/1/3/1/3/131398099/zirurajivatifos.pdf
    • http://jusewi.kerrycaffynart.com/uploads/1/3/1/4/131437987/lewepejogobew-nusoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/josegegunasurawefetara.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/zusavewokuwegajekevinat.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/iras_stamp_duty_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/xivavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5355/files/93565997120.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/tejubebuxipajizuxiporov.pdf
    • https://cdn.shopify.com/s/files/1/0447/2084/9050/files/descriptive_study_in_research_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/18141070777.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20931566490.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99594865370.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/kapuxogokawafibed.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/96905892254.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_off00005fae.bin
51281303372ef5fe59d5cdfe2e4da7e8e7805c33d987f50c1dd3523b54ca6198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 5100 bytes
font_01_sfnt_off000070f3.bin
8a44c111722042998d79ad0b26f9ce0bc7e9ab4c7e9428a2c31485e9a64a387d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 10096 bytes

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