Malicious PDF — malware analysis report

Static analysis result for SHA-256 3606857e655cf2a8…

MALICIOUS

PDF

50.4 KB Created: 2020-09-07 03:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b72487095c1b914366f9b55b349ae60 SHA-1: 6f8258ef645fc2736f85038645cdf7b8e7af5579 SHA-256: 3606857e655cf2a84ea0329cc52089742f505463b8afb1ddfa33247ff42fcac3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. Another heuristic flags a link to a known malicious redirector. The primary malicious URL identified is https://ttraff.me/wix?keyword=aaruthra+songs++isaimini, which is likely used to redirect users to malicious content. The document body itself is heavily obfuscated and contains some of the embedded URLs.

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.me/wix?keyword=aaruthra+songs++isaimini
    • https://static.usrfiles.com/ugd/0d2908_afd17156292c4233ad9b2453d6f838e7.pdf
    • https://static.usrfiles.com/ugd/10a4aa_77987db5ca5c4b158a81990f460435b1.pdf
    • https://static.usrfiles.com/ugd/47b1e8_3d75590675d848aeaac54bed848cada5.pdf
    • https://static.usrfiles.com/ugd/80bfa9_cdc1d375cc8a489e9842542be2d26821.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/36378979781.pdf
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/australian_super_letter_of_compliance.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/63071093727.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/pipoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/illicit_movie_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/doxopuxoso.pdf
    • https://cdn.shopify.com/s/files/1/0434/4201/2327/files/48534222577.pdf
    • https://cdn.shopify.com/s/files/1/0462/7949/1733/files/nerasovefuperakufefebujik.pdf
    • https://cdn.shopify.com/s/files/1/0429/1500/4582/files/48184625725.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/61536344149.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6741/files/ropubeget.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_off00005fed.bin
ddcfd6f9137b2fec3cf831a47c0c8ab1ecb942e949c494d532d8f9c9bfd2f40b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 5056 bytes
font_01_sfnt_off000070f3.bin
ed2db5648c534233a124bc420b5638961e475b77534f3283563900291db32b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 2512 bytes
font_02_sfnt_off00007b9f.bin
19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9F 1936 bytes
font_03_sfnt_off000084e5.bin
f9f863baaa6063ceeda9a259a91a4e97f5c78c7790a77207643cea6cd309d4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E5 11004 bytes
font_04_sfnt_off0000aa06.bin
636a746de0205d752c0ca107a0a17295f6c04d867ac5b641dee12b05fe77b2a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA06 4836 bytes

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