Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ac7e18668c48b3…

MALICIOUS

PDF

34.4 KB Created: 2020-09-02 23:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a07ad04dc5bd827e3addd3b8255de4c SHA-1: fa873527e32718f103fa584bada9b7a8d11e0232 SHA-256: d8ac7e18668c48b39fbeecb6d1eff50d9f3d50d122c8c20c2d1031eca0ceb7ec
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of embedded links, with the primary one being a redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=boondocks+free+episode', which is likely intended to trick users into downloading malicious content by offering a 'free episode'. No scripts were extracted, limiting the analysis of direct execution behavior.

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.com/pify?keyword=boondocks+free+episode
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/vipotijomagudurebebalar.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/cuatro_acuerdos_toltecas.pdf
    • https://cdn.shopify.com/s/files/1/0463/2821/7761/files/ruruxebejokifaxis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/acer_aspire_5315_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/46899657134.pdf
    • https://static.usrfiles.com/ugd/b8c837_b92fa0b6174c46968c8cddc0ad240f12.pdf
    • https://cdn.shopify.com/s/files/1/0461/4252/1497/files/76372597508.pdf
    • https://cdn.shopify.com/s/files/1/0461/4668/3043/files/agammaglobulinemia_ligada_al_cromoso.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/sheetz_menu_nachos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9187/0375/files/antivirus_android_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9393/files/zepuwoverav.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/joxomul.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_off000049c5.bin
00dfa8be329f0e8966529ed6bcc6e41146b2bd59c0db31386e1ed752202ab2f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49C5 5020 bytes
font_01_sfnt_off00005af6.bin
31a7c034d955bfe2e6eec73d721a4d779016251c8cf806893c09cef377042b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF6 10024 bytes

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