Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b7f0de6ac9c4b7…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 02:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57f4eaa296474990e94db13e338f5331 SHA-1: 4db39fc7ac070bb5db0bb481097af83d05a4e77e SHA-256: b2b7f0de6ac9c4b72986ecb6161f3d2963286acbe0f6c73af88d3a829b4d4a43
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary link, 'https://ttraff.com/pify?keyword=3ds+max+tutorials+2019+pdf', is designed to lure users by appearing as a search result for a specific PDF. Another embedded URL, 'http://lotujof.stonegatekilleen.com/uploads/1/3/1/6/131606490/8c4fc9922eda289.pdf', also points to potentially malicious infrastructure. The document body contains garbled text but includes the primary malicious URL, reinforcing the lure.

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=3ds+max+tutorials+2019+pdf
    • http://lotujof.stonegatekilleen.com/uploads/1/3/1/6/131606490/8c4fc9922eda289.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/42072238276.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6726/files/tamunepoxijuzusota.pdf
    • https://cdn.shopify.com/s/files/1/0433/7179/0486/files/wupavexi.pdf
    • https://cdn.shopify.com/s/files/1/0448/5827/8050/files/nfl_strength_workout.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/livro_calvinismo_e_arminianismo_evanglico.pdf
    • https://cdn.shopify.com/s/files/1/0448/1007/6322/files/99765430647.pdf
    • https://cdn.shopify.com/s/files/1/0433/3859/6510/files/form_llc-_12.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/genemapobilavurinapetam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/45087135126.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/nekisu.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_off00006051.bin
a4db6260b38ea61d102f74c40537a1df0988ae8093f704d1709e188194d0b2e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6051 5804 bytes
font_01_sfnt_off000073ff.bin
102b2fd7e785d66830fb641af13dd4b394b6f1a90221df97705e8d2d533bee28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 10816 bytes

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