Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f11904c4313a73…

MALICIOUS

PDF

62.4 KB Created: 2020-08-22 09:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a299f9a00991e1247667bba1704b77c SHA-1: 66e696ebb83b99b6719f436fc9410d09cd620cc5 SHA-256: a6f11904c4313a734a4be571539a3d6dce3625116ea2a149008a33307ab713f8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. The document body, though partially garbled, contains text related to 'Game dev tycoon apk' and the malicious URL itself, suggesting a lure for users to download potentially malicious software. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which point to benign Shopify URLs, but the primary redirector is malicious.

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=game+dev+tycoon+apk+1.+4.+7
    • http://files.ninjamagik.com/uploads/1/3/0/8/130874629/jatupisejumelovavog.pdf
    • http://files.johnstefanondesign.com/uploads/1/3/2/6/132682022/raremigemedarove.pdf
    • http://kubosoze.shenyiacupuncture.com/uploads/1/3/1/4/131482995/kujavafovuwivora.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.pdf
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/61941991794.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/avl_tree_python.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/sazavagugogarofusefuvefa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/somigedidazokabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/different_channels_of_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0444/4746/5639/files/anganwadi_form_download_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/1150/4288/files/galvanized_steel_sheet_thickness_in_mm.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/5514941466.pdf
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/mekesifeninibisefuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/drill_doctor_750x_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/32803668411.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/vegexujabiberenufiwisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/29317935777.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cd8.bin
2d4be7d97626db1747ec7fccde2dee4700a5db90efa32585a8f78bd6bd78e214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD8 5160 bytes
font_01_sfnt_off00007e76.bin
a896b33aece624f60218608a99542465c764fa62c23b0acdf3d84ffd47bd5ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E76 11884 bytes
font_02_sfnt_off00009faa.bin
a7ce2df74f188af1dd661d04fbd3fd0dac2c66b392e9a8a7d4a482da6068418c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAA 10204 bytes
font_03_sfnt_off0000c240.bin
bc0b69446de8cf9163c3abde97f625277e49f857778d5d019b22c3defa37a252		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC240 17800 bytes
font_04_sfnt_off0000dd5b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5B 4324 bytes

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