Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a34f108e7bbdb7…

MALICIOUS

PDF

38.0 KB Created: 2020-08-20 11:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99b47036c93f077d03aaba1e5f0a8be2 SHA-1: a25d173645d41df0318d3476f8aab1e031f2dce3 SHA-256: c7a34f108e7bbdb7080f1a9f9cfa41b50e8cb6a7edee52b3c2ed3e080b53a0b0
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URLs, particularly the one pointing to 'ttraff.ru', are indicative of a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to a 'Tarte concealer shade guide' and the authoring application, suggesting a lure to disguise the malicious intent. The presence of numerous external links, many hosted on Shopify but others on suspicious domains, reinforces the attack pattern of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=tarte+concealer+shade+guide
    • http://files.tseav.co.uk/uploads/1/3/2/6/132680860/jogiguki-kupij-piwojogamew.pdf
    • http://mawujute.misplacedchef.com/uploads/1/3/0/8/130814328/kifef.pdf
    • http://files.newlightink.com/uploads/1/3/1/3/131383821/1e9cf.pdf
    • http://jobijis.summernightsnetball.com/uploads/1/3/0/9/130969140/pubowizilup.pdf
    • http://files.kanley.org/uploads/1/3/0/9/130969322/137133154fc7.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/65995321444.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/66888349290.pdf
    • https://cdn.shopify.com/s/files/1/0451/8608/9109/files/turnitin_software_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/luxupejifezagapafirakajom.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/puzemitu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/vubedemodikudemamipixopef.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/luginomesofiradusunaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/tanitoli.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/55862520327.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/fisovufuxisikunato.pdf
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/zevel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/zixisativuxazidujanuxi.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_off00005631.bin
966552c40a053eb4d3ebb0f1268c06ea45458db7093b4f8dee6f2c53b04b0098
pdf-font-stream PDF embedded font (sfnt) at offset 0x5631 5152 bytes
font_01_sfnt_off000067a3.bin
dd6ad779ad594287092322c13ee38a71825e5dfca501d3f66440dcd1d7425219
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A3 10384 bytes