Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b66a94f61a18f6…

MALICIOUS

PDF

39.9 KB Created: 2020-08-23 14:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c33b904b243875540d69761d26ac69d SHA-1: 6c18885b809096075186022241d0442b8eff703c SHA-256: 46b66a94f61a18f6db181abb9382b1551344e4883a7a2533987051da1b2b17fa
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to job applications and includes the malicious URL. The file also exhibits characteristics of a link farm, with numerous external PDF links, many of which are hosted on Shopify. The primary malicious URL is https://ttraff.cc/pify?keyword=email+for+job+application+sample+pdf, which is likely used to redirect the user to a malicious site.

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.cc/pify?keyword=email+for+job+application+sample+pdf
    • http://puweset.my-greenacres.org/uploads/1/3/0/8/130814328/7751314.pdf
    • http://files.lomaryard.com/uploads/1/3/1/0/131070045/1050846.pdf
    • http://files.circusparkmedicalvillage.org/uploads/1/3/0/7/130775633/vidanuwupufotulujix.pdf
    • http://files.suttas.com/uploads/1/3/0/8/130813524/jorokipidiveze.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/chrome_browser_app_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9221/files/xerowilesak.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/academic_writing_for_ielts_sam_mccarter.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/52579751014.pdf
    • https://cdn.shopify.com/s/files/1/0445/4046/1220/files/ikea_catalogue_2020_uk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13139855908.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/ketizizesoko.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/dulikexumu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/lititepunowazuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4507/7671/files/tixotigimulebarurarasevi.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_off00005f33.bin
331334240ce2b4ad1ee94058aae5d8fc3f5e7215e2a36b609f1a1dbcecf23cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 5472 bytes
font_01_sfnt_off000071b1.bin
1a36a276d20df25d3c3e97de2b7c44c7d0d9ed5476561fa4872c8d91ceac4dc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B1 9728 bytes

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