Malicious PDF — malware analysis report

Static analysis result for SHA-256 350437b18126a2f1…

MALICIOUS

PDF

38.8 KB Created: 2020-08-01 19:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6751dbef4ee0ae42939ab34c14c5928a SHA-1: 358c82ce52057f5186fe935985da3f19adc8c618 SHA-256: 350437b18126a2f1b9ce96d246168abe1c4aba449e4f10d140ecbf00a11749bf
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with 28 external PDF links identified. One of these links, 'https://ttraff.ru/pify?keyword=iggy+pop+candy', points to a known malicious redirector. The document body contains garbled text along with the identified URLs, suggesting a lure or obfuscation technique. The primary attack pattern appears to be SEO link farming or a redirector chain designed to lead users to malicious content.

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=iggy+pop+candy
    • http://files.louisianamasternaturalist.org/uploads/1/3/1/3/131379110/1887da.pdf
    • http://files.lechandelierdor.com/uploads/1/3/0/7/130739533/9998855.pdf
    • http://files.glitteratibath.com/uploads/1/3/0/8/130874086/vawirugumija.pdf
    • http://files.mi-sheffield.com/uploads/1/3/1/6/131606368/niludavifek_rerodotite.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/savep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/38398579090.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/28582192578.pdf
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/ruxekatazapomotakusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/pukomil.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/convert_pages_to_docx.pdf
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/66585352716.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/56031117912.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/depeleranejazaruvan.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/fufakeradeb.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_off00005bd7.bin
4ca23fe3230ee5c63bf3c16f332b4e0ded0a55a3e09154c7cfff891ed9c09041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD7 4976 bytes
font_01_sfnt_off00006cea.bin
bcd2660ae291d0bdefb93f77e8cf9ee02002df5f21a8719bb45d743833b7ea94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEA 10124 bytes

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