Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f3ee37575e9423…

MALICIOUS

PDF

38.9 KB Created: 2020-08-17 13:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c81b0e0c3d0e923ee80684bd2ccda9d SHA-1: 1288363b67436dce0383bd581b912b4734bc8db0 SHA-256: 32f3ee37575e9423455843453b1ddab2583085111f89df07c94980fb0517fe88
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to 'Frozen Fever trailer', suggesting a lure. The PDF also exhibits a link farm behavior, with numerous embedded links to various PDF files, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the primary malicious activity observed is the redirection to a known malicious domain.

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=frozen+fever+trailer
    • http://files.lavadaslens.com/uploads/1/3/2/6/132682235/3414056.pdf
    • http://zaloma.transformalart.com/uploads/1/3/0/8/130873951/8797978.pdf
    • http://kurad.cheswest.com/uploads/1/3/2/7/132712413/timerazabifolibibof.pdf
    • http://files.theaffairseries.com/uploads/1/3/1/4/131454034/2699731.pdf
    • https://cdn.shopify.com/s/files/1/0429/5596/4569/files/analytica_chimica_acta_author_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6708/8791/files/how_to_increase_height_by_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/aws_infrastructure_as_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/storm_in_a_teacup_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/xejirirekoxajimesifa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6274/6517/files/wezaregu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/instagram_analytics_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/definicion_de_contaminacion_del_aire.pdf
    • https://cdn.shopify.com/s/files/1/0431/9179/5873/files/76184809197.pdf
    • https://cdn.shopify.com/s/files/1/0432/7653/3916/files/5337551433.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_off00005ba7.bin
90e122ba9eb431d9afbf35cbb43d9021f5fcdd3295981d0d7d49e1a69b39198f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA7 4648 bytes
font_01_sfnt_off00006b91.bin
84e2a39057062a1b8ed696e6e9ea0839d1b88863253d59bf889ff6e64e3afdfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B91 10360 bytes

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