Malicious PDF — malware analysis report

Static analysis result for SHA-256 955a9cbc50ab38cc…

MALICIOUS

PDF

58.8 KB Created: 2020-07-31 04:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6949c65f96849cac6def63211158cc45 SHA-1: 20b12fb79b3a047df7822fd62b5cb0f5b527581f SHA-256: 955a9cbc50ab38cc995903f2655205f122c9086a0d55e6f695b1e264db2e498d
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 Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains text related to learning drum sheet music, likely a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

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=apprendre+a+lire+une+partition+de+batterie+pdf
    • http://files.friendsofcolchestermusic.com/uploads/1/3/1/3/131383398/3706871.pdf
    • http://files.sandaharrboerboels.com/uploads/1/3/2/6/132681566/6896535.pdf
    • http://files.eastrichmondbeekeepers.org/uploads/1/3/1/8/131856917/6475872.pdf
    • http://files.currockpress.com/uploads/1/3/0/7/130776166/nugemepesonel-leneb.pdf
    • http://files.friendsofcolchestermusic.com/uploads/1/
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/filanuvuvijepalumodosila.pdf
    • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/toxegikefipebeguvipikuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/60516725270.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/refedalake.pdf
    • https://cdn.shopify.com/s/files/1/0431/1046/5698/files/zavexobiwuvuwalijiluxipa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/siwemibana.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/29513669783.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/waxuvirojesiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/kejinelarobefobodibox.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9829/files/36829472837.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/47673643839.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/16237836538.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000877d.bin
e3da254c4820d597ba7910f4e1df5c593eb04529806b0dfed3ec7eb679f07489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x877D 4868 bytes
font_01_sfnt_off000097fe.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97FE 1800 bytes
font_02_sfnt_off0000a08b.bin
22a53ade02fa6fe0a6e33524c9e9fa93903c435c7b28d4c088816251a71476d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA08B 11676 bytes
font_03_sfnt_off0000c562.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC562 16312 bytes

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