Malicious PDF — malware analysis report

Static analysis result for SHA-256 400db35341a383fd…

MALICIOUS

PDF

56.0 KB Created: 2020-08-11 19:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43dc6370f40459f7c907e9d6e509feaf SHA-1: 47dfe556a329c6ad72a293af37355445691190ac SHA-256: 400db35341a383fd4edaadb54beff1800c06db84bb38be48a92af2ec38ba52d3
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. This suggests a phishing or redirection attack aimed at leading the user to malicious content. The presence of many Shopify links indicates a potential SEO poisoning or link farm tactic to distribute the malicious PDF.

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=least+common+multiple+definition+pdf
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdf
    • http://files.carrollcountydentistry.com/uploads/1/3/0/7/130740521/ed2e3.pdf
    • http://files.thenottinghamfour.com/uploads/1/3/2/3/132302814/jakafapig-nuburuzepawikaw-dimekowezuzudo-disivetok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/ziperan.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/advantages_of_social_media_essay.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/waneliboranu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/gaxagomifemuwibadej.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/fufijusebir.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/hiv_aids_awareness_prevention_treatment_and_services.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/83254528689.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/bevamewuguvisabisude.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/61153577525.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/66682525483.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/978547717.pdf
    • https://cdn.shopify.com/s/files/1/0438/2759/3376/files/alphabet_worksheets_grade_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d8c.bin
c6d6cf08ec1ecf45474c29a2ec84cf6d167e347589d72607a5faf68966014086
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8C 5148 bytes
font_01_sfnt_off00008efb.bin
92faeed0652e518fad7d3ee6872f019cfe66754a5024a35380200aa53fd22aae
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFB 14776 bytes
font_02_sfnt_off0000bd53.bin
b001abfb9014df218347261fbade20e3d085fe9803c519352897f3648d7cde45
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD53 16216 bytes