Malicious PDF — malware analysis report

Static analysis result for SHA-256 570140c6a89e0c71…

MALICIOUS

PDF

55.0 KB Created: 2020-08-12 04:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c4fa2c5de964de7406cf7466594df92 SHA-1: 47b87cf7afbba4645b480d396e5e29ac5fb674f4 SHA-256: 570140c6a89e0c711581027104880108d3c1785b37695c5d9ce7c56ba6dadca6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm suggests an attempt to distribute malicious content through numerous indirect links, likely to evade detection and mislead users.

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=advanced+calisthenics+pdf
    • http://files.gentletouchcreationsministries.com/uploads/1/3/1/8/131856433/6d456af871.pdf
    • http://weras.thesoulcenter.ca/uploads/1/3/1/4/131407558/mulite.pdf
    • http://tukikub.saveourdowntownslo.com/uploads/1/3/1/3/131383483/1424573.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/48701464471.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0348/files/37770896972.pdf
    • https://cdn.shopify.com/s/files/1/0433/8905/9228/files/sediw.pdf
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/41784141724.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/zopilitigeresusoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9494/files/dedication_sample_for_ojt.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/31823817799.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/lufasakunejinimikusagun.pdf
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/zupebawatigumofuxikusevu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/speaking_assessment_rubric.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/cetoacidosis_diabetica_manejo_de_urgencias.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/zamaruduxoti.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_off00009b02.bin
6d0d59365e6a9f0f659d6cbba61e487fe233ba94f40408b49829b282b55e4ad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B02 5196 bytes
font_01_sfnt_off0000acb7.bin
cc5be8a582281c23a27f557cd4c63c875f29e6b34b379168fada1430df992dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACB7 10204 bytes

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