Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f57ad2d7723d71a…

MALICIOUS

PDF

42.4 KB Created: 2020-08-20 09:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5539d5abe7ccdd94e8eba03cb7404a1c SHA-1: 1f2fb8ee457f2fafe153d22c635975fd547a3ea9 SHA-256: 3f57ad2d7723d71a810b1d4e066dc0d041d1c81a79c5500b26b5b66e3a84ffd5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=control+panel+worksheet+2008t+machine', is designed to redirect the user to a malicious destination. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting an attempt to obscure the malicious redirector or engage in SEO manipulation for traffic. 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.cc/pify?keyword=control+panel+worksheet+2008t+machine
    • http://files.alexsarrigeorgiou.com/uploads/1/3/1/4/131411199/9036105.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/business_plan_sample_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/84477900072.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/10440550622.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/adenomegalias_cervicales_en_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/zezofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/59550608317.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/17785965355.pdf
    • https://cdn.shopify.com/s/files/1/0431/2386/7805/files/palapun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/persistent_organic_pollutants.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/area_of_all_shapes_geometry.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/8724957545.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/71387131473.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_off00006404.bin
901f7614a3a535618ff0aabea7e042be1604a46127be63fcbe5625029f8a7025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 5704 bytes
font_01_sfnt_off00007755.bin
948d329a21b7df25c366f772b590cd24651f164aede6ca178562697d782d97ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 11640 bytes

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