Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f80cd725826431…

MALICIOUS

PDF

74.5 KB Created: 2020-08-10 04:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1d4df2e61723757e36dcb0841c19f87 SHA-1: 917db4a73d2fd47de84c3a915a2e3098ee4f967b SHA-256: 95f80cd725826431c27b8367a7d551862d7183481744d374d3351a43ea63e4f8
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=steve+jobs+aaron+sorkin+pdf, which is likely used to funnel victims to further malicious content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious nature of the file.

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=steve+jobs+aaron+sorkin+pdf
    • http://files.costellohsie.info/uploads/1/3/0/7/130775751/zumipibigano.pdf
    • http://files.lcchefonline.com/uploads/1/3/1/3/131384583/2348785.pdf
    • http://files.charlotteandcompany.net/uploads/1/3/1/4/131437724/12e02305.pdf
    • http://files.wyckedzplace.com/uploads/1/3/1/6/131637649/3026710.pdf
    • http://files.sewaneerealty.com/uploads/1/3/0/8/130813095/d0e2e0.pdf
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/57659802347.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/vaguzogovimufenagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/alimentos_transgenicos_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/amazon_writing_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/filotabosokupot.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/zutol.pdf
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/31539194031.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/0981/files/bipolar_junction_transistor_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/digital_electronics_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/pedonafokekexobe.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_off0000e5d6.bin
cdec67428bc6532ec179e9115b4ed1d9e9c6a68ee3d036eecee53d0e46cf71d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D6 5448 bytes
font_01_sfnt_off0000f871.bin
67b075c00ff49b03c892ae425f30a22b0d4b5b018ea3760e291b2d698ca32e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 10604 bytes

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