Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b3e239e4f8484a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-13 22:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50ba24cc0572764c99f5c39b8b518df7 SHA-1: 0305f642d3731fcda55f2c5d0140244587811491 SHA-256: e1b3e239e4f8484aaeb644f8d3749690e564c7df627c8370c411f3894e9c95ea
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=video+game+platform+definition', suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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=video+game+platform+definition
    • http://kedotodi.skillassoundandvision.com/uploads/1/3/1/0/131069992/pimuwum_mebelegopokuk.pdf
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdf
    • http://xuzoxif.jweinsteinlaw.com/uploads/1/3/1/4/131438096/8944131.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/cpsm_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/how_to_use_airshou.pdf
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/xuvizavofabajak.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/37203938533.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/remusuwifetotusip.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4885/files/kovowidowixusamem.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/luxuworazud.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/kusixinir.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/tugumedesobitixe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gotisirifiwixi.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_off00006647.bin
c41d49129097132a8426bb77cdd810e4711bbab2725a8a854bdc6e63b46f9986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5148 bytes
font_01_sfnt_off000077bc.bin
63a8b7a468abe1e367d54a34a6e1e31ac3be41022fe91ef1d6767f101033ceb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 10292 bytes

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