Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33f32690eddeb51…

MALICIOUS

PDF

41.9 KB Created: 2020-08-18 13:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d787498b71a6ac1401836a30abcf96 SHA-1: 58453f1b44bc0ee2a4264dbcf917852a2d7a8199 SHA-256: f33f32690eddeb5133a74564ceae1ebcaa1ccda6eaf20c30e55fbd5091152c56
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL and a reference to a benign-sounding topic, suggesting a lure. The presence of a PDF link farm heuristic further indicates an attempt to distribute malicious links.

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.com/pify?keyword=android+textview+bold+not+working
    • http://files.beaglebnb.com/uploads/1/3/0/8/130814411/1134500.pdf
    • http://kasav.bigbeebooks.com/uploads/1/3/0/8/130814328/a0af0635d19eda4.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0435/8252/1503/files/xujekukebib.pdf
    • https://cdn.shopify.com/s/files/1/0439/4093/7896/files/aristteles_potica.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/documento_de_arquitectura_de_software.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/rufotuti.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/parametrik_olmayan_testler.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/barron_toeic_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/65331835665.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/difference_between_basel_2_and_basel_3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3852/files/effortless_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/nasegulamapokotasuwero.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_off00005c53.bin
176ebb2490d8cc540e3fe0dfd93a45ccb29aed51205dea704466a814d6a56ad9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C53 5016 bytes
font_01_sfnt_off00006d90.bin
de159e00246756e2bd7294cf2fdf6bf1470806fc748d35825427930a94302dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D90 14344 bytes

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