Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ee27488ffcb04a…

MALICIOUS

PDF

42.3 KB Created: 2020-08-31 11:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 673e5a432711b63a5e786dd826db8ef0 SHA-1: 12f21c15aa02ad8a11f13b207a24541ac788ec66 SHA-256: e7ee27488ffcb04ac6bd327e51b9ab3eeaa1b083267f1c6bf9544440eab4b48f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Autocad 2018 tutorial for beginners' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other links, many hosted on 'cdn.shopify.com', indicates a link farm strategy, likely to improve SEO for the malicious redirector.

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/wix?keyword=autocad+2018+tutorial+for+beginners
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/i_want_to_break_free_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/panasobakigujemufagegiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6643/files/fekezikijilelexuxujak.pdf
    • https://static.usrfiles.com/ugd/238140_c688ae89907d4855a2f18855db018e56.pdf
    • https://static.usrfiles.com/ugd/e78b77_78dcf4766a5444a99535e26a85a9c4c9.pdf
    • https://static.usrfiles.com/ugd/afe78f_bcfaf41cc60848efad442581eeeddf83.pdf
    • https://static.usrfiles.com/ugd/b8c837_19e102540730479fa24403e4e216ae7d.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/kefuribiroranivinuti.pdf
    • https://cdn.shopify.com/s/files/1/0436/6758/7225/files/wurajufodok.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/24678681389.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/lowes_sandusky_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/intranet_vs_extranet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8099/8302/files/84417039992.pdf
    • https://cdn.shopify.com/s/files/1/0435/4349/4807/files/68333567851.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/calculus_8th_edition_stewart_answers.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_off00006787.bin
d5894854e53583a7cd5f8c78f9ed6c4b84030948eeee4eca9acb9d979eefbf42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6787 5836 bytes
font_01_sfnt_off00007b67.bin
e42b5a9583cdd41679c710e89c006b12d9467e00aae4467e4d7096f0e6de4651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B67 9824 bytes

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