Malicious PDF — malware analysis report

Static analysis result for SHA-256 f744fd7545b26b99…

MALICIOUS

PDF

46.4 KB Created: 2020-08-31 15:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29961ac1003a6f1b82e714447050abd2 SHA-1: 31715d032f0fbe8d058d75746249644c6cd7eb34 SHA-256: f744fd7545b26b9974d3600e36d6dfe8ddcaa5773f4a0d868e0e55fa5c4a809a
130 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Acer aspire one windows 7 drivers' and includes a critical heuristic firing for a malicious redirector link. This link points to 'https://ttraff.ru/pify?keyword=acer+aspire+one+windows+7+drivers', suggesting an attempt to redirect the user to a malicious site. The presence of a download button lure further supports a malicious intent, likely to trick the user into clicking the 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=acer+aspire+one+windows+7+drivers
    • https://cdn.shopify.com/s/files/1/0431/5326/0706/files/ivoclar_blueline_shade_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/xomunagimiti.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/20503057171.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d9449bcc04a4a73972dae8474ec9713.pdf
    • https://static.usrfiles.com/ugd/b8c837_15ae33e778fe4ce399a15731f2ff40dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c37149fb4284a5ab6f438377b4050a9.pdf
    • https://cdn.shopify.com/s/files/1/0438/4768/0162/files/sixalubodelenawow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/java_spring_tutorial_beginners.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_7f701df8f7b440c584fca068bf1214cd.pdf
    • https://static.usrfiles.com/ugd/544c7e_42bee71d62a143e19d8dbf0701cb42a0.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_off00006d8b.bin
dcd16eeeff19f188a6a5f32e0d3016df0311cfbead72e32bb457809fcfcdc4e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 5256 bytes
font_01_sfnt_off00007f95.bin
dc6e8788dd55b756edb0b94edae094f19eb3ba3967d180d8a64eadc9047cc290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F95 14608 bytes

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