Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6b9e972068e5530…

MALICIOUS

PDF

46.7 KB Created: 2020-08-09 00:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ed97a4021e3a89fec793785564fee31 SHA-1: 6e98f9f85e01afb2f4fb75106cae488986ac3686 SHA-256: f6b9e972068e553013e54b641840f6d2bab263fdc00324f274767fcaf578ddbf
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.com/pify?keyword=bootstrap+button+download+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing this finding. No scripts were extracted from this sample.

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=bootstrap+button+download+pdf
    • http://files.dsmfunko.com/uploads/1/3/2/6/132696104/gitelubofexisivuvox.pdf
    • http://files.renew-wellness-sg.com/uploads/1/3/1/4/131438195/de6a5.pdf
    • http://files.pleasantmeadowmw.org/uploads/1/3/0/7/130774979/govikexaledu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/doxikoranen.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/c_read_file_into_array.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0055/files/betujuna.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/88310728808.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/kopebavowabupodugurinop.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/tobulexix.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/literature_review_of_anambra_basin.pdf
    • https://cdn.shopify.com/s/files/1/0428/5100/8671/files/12345500896.pdf
    • https://cdn.shopify.com/s/files/1/0432/1617/5263/files/volujufiwebununogibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8517/6736/files/candidiase_masculina.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/similar_shapes_area_and_volume.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/tadimofanenomovuso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e23.bin
4b389a6886a6181af90bb9fdcccfe0a22f92bb0f96ff9e64cb03914a4b048c27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E23 5032 bytes
font_01_sfnt_off00007f50.bin
bdd179afa33bb9c3482c55e19e042df1096d624803025b406ef770d1db3e4615		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 9472 bytes
font_02_sfnt_off00009fde.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDE 4324 bytes

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