Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3a94aa56be4ebe…

MALICIOUS

PDF

46.5 KB Created: 2020-08-14 02:19:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bd12f2a51e902ed68c4a5be53fe1e52 SHA-1: 8fe7d1c7688c234a4dd137b04b22288a262afba8 SHA-256: 2a3a94aa56be4ebee13a9cec58f42941b0fce7722c945ecd651be9e8f6c391ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking URLs hosted on Shopify, suggesting a link farm or redirection tactic. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document may also attempt to trick users into installing remote support tools, further increasing the risk.

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.ru/pify?keyword=android+set+default++to+sd+card
    • http://files.pelebonitaspa.org/uploads/1/3/2/6/132681947/zowowarawunevaboxaf.pdf
    • http://files.nicoledrakewright.ca/uploads/1/3/0/8/130874493/kugefipixeg_xawoguka.pdf
    • http://lakupe.moscoverse.com/uploads/1/3/0/7/130776485/xivonoxiwalemej.pdf
    • http://timuxijol.theyogasocial.com/uploads/1/3/2/7/132740285/5592806.pdf
    • http://files.anointed.store/uploads/1/3/1/4/131409090/fofalevirefewiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/15841425870.pdf
    • https://cdn.shopify.com/s/files/1/0432/6562/2184/files/pafuwibewujewi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0289/5270/files/81_fresh_fun_critical_thinking_activities.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/scrapebox_cracked_blackhatworld_forum.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/real_usa_address.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/diferencia_entre_anabolismo_y_catabolismo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/81772424035.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/utorrent_apk_for_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/1st_year_biology_book_download_sindh_board.pdf
    • https://cdn.shopify.com/s/files/1/0452/1653/0589/files/tajegej.pdf
    • https://cdn.shopify.com/s/files/1/0434/2765/9932/files/marketing_communication_strategy.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007928.bin
d4cbb6710a8d76b4cec21e65e5697e1555bdb7b79cc197595585db1be085d8cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7928 5004 bytes
font_01_sfnt_off00008a30.bin
362e33819a9e7af9195e68e6789f1dd6b4c4cb9d26ba765b7a414b90bd1d02c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A30 10304 bytes