Malicious PDF — malware analysis report

Static analysis result for SHA-256 52868e1bbf27019e…

MALICIOUS

PDF

119.4 KB Created: 2020-08-19 06:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3965bd8e965faa63ca651031cfc09949 SHA-1: dff6e2e8c7942684a7f3bc69043fa33871a83d3d SHA-256: 52868e1bbf27019e2583e9e5ea55d199ad5aecd24e70f48faf84d65dc5a8002e
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=half+yearly+exam+2018+english+answer+key
    • http://files.tycymorth.org.uk/uploads/1/3/0/9/130968992/kiwapemugugi.pdf
    • http://files.tasmanyf.org/uploads/1/3/1/0/131070356/75bbf1427.pdf
    • https://cdn.shopify.com/s/files/1/0432/7997/4556/files/24208929381.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/gizubifajatune.pdf
    • https://cdn.shopify.com/s/files/1/0448/2813/1485/files/estados_financieros_contabilidad.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/tv_guide_florence_sc.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/paxosexutede.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6094/files/vawopuzavizawaperalasab.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/81712398054.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/kokifajutaso.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001371a.bin
c4de3c9d0eb1ab0fd71436860ee081f8bcfee49963e01a0e887da6052678ac7d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1371A 19852 bytes
font_00_sfnt_off0001243e.bin
91b5bc45d0fb8114e69ff4bb251a16edf4c32b876de540c6bc40ac0877d13a09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1243E 5588 bytes
font_02_sfnt_off00016257.bin
cf59a1c105ebc0425001a103fd3720db8079a93491def8cdf6e7b06015e454fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16257 1944 bytes
font_03_sfnt_off00016ba0.bin
7e0415d7a060c70972731cbff17bc685db39b1deecc2f64e581d489687a4a203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16BA0 15608 bytes
font_04_sfnt_off00019be9.bin
560548190d3588af37ebd144b10067da26eafb353cf82387b3a26894bc5052bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19BE9 16364 bytes
font_05_sfnt_off0001b1f5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1F5 4324 bytes
font_06_sfnt_off0001bff5.bin
dfbf09cc153ffa2fa7ced384135d848d278891a2eefb43d42369ee97a0b1926f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFF5 3616 bytes

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