Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaea7d81e2a3ce93…

MALICIOUS

PDF

44.7 KB Created: 2020-07-28 21:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc5930d0bea8f570719b933424e746d9 SHA-1: 3c3f07464520be5cbf822a789fc6183b29fb1bf4 SHA-256: aaea7d81e2a3ce9341c874faa7e51c7ae220d5c349a2f5f6e19efe7b36205aa4
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a visual download button lure, indicating an attempt to trick the user into navigating to a harmful site. The primary malicious URL identified is https://ttraff.cc/pify?keyword=adobe+photoshop+free++key+7.+0, which is part of a link farm designed to attract search engine traffic. The document body, though heavily obfuscated, contains text related to 'Adobe photoshop free key' and the authoring application, suggesting a lure for pirated 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.
  • 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.cc/pify?keyword=adobe+photoshop+free++key+7.+0
    • http://files.dippedindope.com/uploads/1/3/1/3/131379894/gugomuwurotux-bakafati-pedef-tivewexewuxa.pdf
    • http://files.professorwillis.com/uploads/1/3/1/3/131384660/2e29e03a78d14.pdf
    • http://files.heathervillari.com/uploads/1/3/0/7/130739315/lukame_mofamak.pdf
    • http://files.madlyeclectic.com/uploads/1/3/0/8/130814902/9b545f3b4596d2d.pdf
    • http://files.heathervillari.com/uploads
    • https://cdn.shopify.com/s/files/1/0432/5376/0160/files/92003507265.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/40679420569.pdf
    • https://cdn.shopify.com/s/files/1/0435/4103/7207/files/nokarozaxotosawukolosofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/96162144054.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/zenitorazevudavoxokax.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/68325093427.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/fipumal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/jubixamokuvotovabibafaje.pdf
    • https://cdn.shopify.com/s/files/1/0434/9696/4261/files/nivokixe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7267/4209/files/56834663915.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdf
    • https://cdn.shopify.com/s/files/1/0429/7742/7609/files/midivubuzaxebujetumama.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/51294796282.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_off00007258.bin
50592bcdf63c7cb469506235818f57d27411c54befc66ec7d43a6ec1a6b9ac6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7258 5072 bytes
font_01_sfnt_off000083c0.bin
50d0ba6ffc7931ee31113e8970e82865e453430b64a60aaf541253ba71706613
pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 9868 bytes