Malicious PDF — malware analysis report

Static analysis result for SHA-256 375475cd9f1cbf9c…

MALICIOUS

PDF

47.5 KB Created: 2020-07-30 20:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c3f23a20ce5916bcd592956a26426d6 SHA-1: bf6d93737399074e71b0a39bc930e84c8e155cab SHA-256: 375475cd9f1cbf9c504fca67a902597938a33040638fb6dfd267b9f29adcc651
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fashion+magazine+layout+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, suggests a lure related to a 'fashion magazine layout pdf'. The primary attack vector appears to be social engineering through a deceptive link.

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=fashion+magazine+layout+pdf
    • http://files.earthtopdx.net/uploads/1/3/0/7/130740589/8084454.pdf
    • http://files.myollimaattacollection.com/uploads/1/3/1/0/131070331/rireberodefuleb_benivu.pdf
    • http://files.maidoecuador.com/uploads/1/3/1/3/131384127/jilinala_kadidegifebem.pdf
    • https://cdn.shopify.com/s/files/1/0433/9102/5306/files/39525698690.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/bovasulexolerolar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/vufidutama.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/45932860486.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/majibis.pdf
    • https://cdn.shopify.com/s/files/1/0438/2729/8461/files/zezoko.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/xigexolovegomivapomej.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/turomojawemeramadogixiv.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_off00007bd9.bin
be321629630ec01808db2e797a458016bdf81496ddfa1b2978ef4063706bb47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD9 5348 bytes
font_01_sfnt_off00008df1.bin
fe87bb49c9ac49ac2bc3b1ba638b03ce40612dc9944ae43599560ef057843387		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF1 10300 bytes

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