Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f129e9e935710c…

MALICIOUS

PDF

34.7 KB Created: 2020-08-26 12:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c447d486aab624ca648414766b666a3 SHA-1: 8a6af7c80eeb1c91581f155ba38fc230815d09f1 SHA-256: a2f129e9e935710cdfc7570697d98721e7330ec6ff827d8735b275e6b73938e1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.ru/pify?keyword=kasey+kane+porn, is flagged as malicious by a PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body contains garbled text but also includes the malicious URL, suggesting a lure or redirection attempt. No scripts were extracted, and the primary malicious activity appears to be link manipulation.

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=kasey+kane+porn
    • http://files.theplasticmeccanonut.com/uploads/1/3/1/0/131071063/dodogujilol_patujadu.pdf
    • http://nabepok.witnessprism.com/uploads/1/3/0/8/130874254/7296537.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/milk_the_1975.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/57414904085.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/caroline_chisholm_catholic_college_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/become_vegan.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/85367857205.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/famulogux.pdf
    • https://cdn.shopify.com/s/files/1/0443/0161/5260/files/fusionner_2_avec_adobe_reader_xi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/91760642010.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/10026940492.pdf
    • https://cdn.shopify.com/s/files/1/0465/0549/2638/files/jepigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/bimenaboxidaroxugiti.pdf
    • https://cdn.shopify.com/s/files/1/0438/7015/9016/files/bingo_card_blank.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_off00004b53.bin
108521a8fc5540b23a03c47cda713fa12d5552b9a5ae6a397891282a811f3d2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B53 4916 bytes
font_01_sfnt_off00005c1e.bin
62522bf850349e00e2bf092d12d8423459072ead394f772eb792f653205a7aed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 10008 bytes

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