Malicious PDF — malware analysis report

Static analysis result for SHA-256 55cc09ef7332d5fa…

MALICIOUS

PDF

42.6 KB Created: 2020-08-25 22:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20749086e11de618605ec5da88ae75c3 SHA-1: d5edf49ed8899e937495fc65d2d336f6abb8aeb2 SHA-256: 55cc09ef7332d5fa657386dd8a5106ae503c22a622c4da229cc403cb8afc01f7
162 Risk Score

Malware Insights

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

The PDF document contains a lure for a remote support tool, specifically mentioning TeamViewer, and includes a link to a redirector. The redirector URL is `https://ttraff.com/pify?keyword=teamviewer+6+indir+full`, which is a known malicious redirector. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility. The primary intent appears to be social engineering users into clicking the malicious link under the guise of downloading software.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=teamviewer+6+indir+full
    • http://files.youthengagementplanning.org/uploads/1/3/1/6/131637498/567c60a4dff8eb.pdf
    • http://files.alternativeboomerlegacy.com/uploads/1/3/0/7/130739116/7fb4214964d.pdf
    • http://files.ectorbio.com/uploads/1/3/0/8/130813736/0e44b0fbc57baf.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/the_bishop_s_candlesticks_short_dialogues.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/anstoss_2007_jubilumsedition_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/zirafatuvopabuniwudozuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8051/4726/files/python_fit_gaussian.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/kuvopivaleti.pdf
    • https://cdn.shopify.com/s/files/1/0437/1621/4936/files/xujajovonezuzubosipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/analytical_writing_sample_essays.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/45541014489.pdf
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/wupedexuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/atingerea_lui_juliette_volumul_2.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/39361361745.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8759/files/45809277998.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/vikinipixaxiferurogo.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_off00005d4f.bin
2e00495fc07978d8875e31f0104ce8b10dd6b47de301df62820b8c86b28c9af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4F 4824 bytes
font_01_sfnt_off00006d98.bin
701bb21affee95b693480c168e1e983210946313cc7ff63869755a196574a052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 9964 bytes
font_02_sfnt_off00008fae.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAE 4324 bytes

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