Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b35541e5052b98…

MALICIOUS

PDF

41.7 KB Created: 2020-08-14 06:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76f3c6df7fd87a986d87e72e4a0fdaa4 SHA-1: cced66fdca94bccd19b81e13d47683c6405ba9af SHA-256: 45b35541e5052b9879eab29e9f4f870d864ac48de4c9341507f446acb3d30f28
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm, with one prominent link pointing to a known malicious redirector. The redirector URL is associated with a keyword suggesting a software download lure. The document body contains garbled text along with the redirector URL and several other PDF links, further supporting the malicious intent. 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.ru/pify?keyword=backuptrans+android+whatsapp+transfer+full+version
    • http://files.preraktrust.org/uploads/1/3/1/4/131453902/02a12842a817df.pdf
    • http://gulede.janinehartley.com.au/uploads/1/3/1/4/131411896/winuzimafoxa.pdf
    • http://files.karrathacaravanpark.com.au/uploads/1/3/1/4/131437949/9115762.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/gedirusuderuxaxoxiteti.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/dokafejonazomezaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/10023612708.pdf
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/phantom_bird_monster_hunter.pdf
    • https://cdn.shopify.com/s/files/1/0439/0053/4952/files/dilexaxumujonas.pdf
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/tojifutipupedumitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/52403424883.pdf
    • https://cdn.shopify.com/s/files/1/0437/3908/7002/files/dorilemivuwevizoxeja.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/44974443006.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/lodupafuzefaxupomoxazuzo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/ayushman_bharat_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/project_planning_and_budgeting.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_off0000642a.bin
074aa82aaf4fce1d7086dc30f2fd15d78bee6e5ab7761ff5ff34285296e9cdb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642A 5508 bytes
font_01_sfnt_off000076fa.bin
05b944a9dfb0ae324586ea4c8f60878b7d8d6fc75e8105cc679d950a9cb85fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FA 10144 bytes

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