Malicious PDF — malware analysis report

Static analysis result for SHA-256 9113ba84369cb1e2…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 07:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 836469039ea70c52831b61fffa4fecbe SHA-1: c2f2674b3dd69cb64d938b682774c814ce8493a9 SHA-256: 9113ba84369cb1e253f57b825e85075f8a9c1619cb8bfc9b9024b694a3b30930
128 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, including a critical finding of a PDF redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The presence of a visual download button lure further supports the malicious nature of the document, aiming to trick users into clicking the malicious URL.

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/wix?keyword=adobe+flash+builder+4.8
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/massey_algebraic_topology.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/33622566413.pdf
    • https://cdn.shopify.com/s/files/1/0432/4088/2343/files/24059347874.pdf
    • https://cdn.shopify.com/s/files/1/0430/7428/9813/files/hideninja_vpn_pro_apk_cracked.pdf
    • https://static.usrfiles.com/ugd/934fc3_6476ea4a11d64c78b81485e66916a1e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f7cf76f30f945db8918bd3374027ccb.pdf
    • https://static.usrfiles.com/ugd/0a052f_df52af1e07bd4b80a986a97afcdb8ee2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bccd6a9c70c48b3ae72f07ad2df43aa.pdf
    • https://static.usrfiles.com/ugd/55cc32_8ec43f50e78e49c2b30e3dab88b5a048.pdf
    • https://static.usrfiles.com/ugd/1c90dc_6c3e3d8028c4423097568b67fcd52ddc.pdf
    • https://static.usrfiles.com/ugd/0c4177_859fe7854ca04ef3bd6919bc7a36872e.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_off00006ea6.bin
80aba5a0904346bba3daa9b8695425132e289cc272c20d7f8b2d53b541f9ed8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA6 5436 bytes
font_01_sfnt_off0000811f.bin
b759f5187f00540e7c1f73676ef4f20f82105eb0936b85df802fcec78e2ebc9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 10532 bytes

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