Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf7af8677b5c61d…

MALICIOUS

PDF

48.7 KB Created: 2020-08-10 00:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53ff39453ed6b47b7ae2b35312a20058 SHA-1: 5205ecd6c2e243e48d7e2c68b8643fb704b3f4f7 SHA-256: 3bf7af8677b5c61d0ea12edb3d31870e1302e4ae8ad32308861fac10e881049c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL is https://ttraff.ru/pify?keyword=advanced+trainer+pdf+2020. This indicates the document is designed to redirect users to malicious sites, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated.

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=advanced+trainer+pdf+2020
    • http://files.misslncreations.com/uploads/1/3/1/3/131381428/gafago-wirikufubod-mojediseleva.pdf
    • http://files.8book.org/uploads/1/3/0/8/130873927/6fe99e743f9f8.pdf
    • http://files.littletonpreschool.com/uploads/1/3/0/7/130739826/boxafabenupe-vageziril-vofafunufob.pdf
    • https://cdn.shopify.com/s/files/1/0444/0460/5094/files/brentuximab_vedotin_fda.pdf
    • https://cdn.shopify.com/s/files/1/0437/3689/1544/files/zawevazowifawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/tisowatuxomikep.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/dolenoronakotisi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/ubuntu_server_18._04_static_ip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0437/6510/4791/files/xorawanegoxosima.pdf
    • https://cdn.shopify.com/s/files/1/0434/6776/7970/files/sugirosaza.pdf
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/22354743997.pdf
    • https://cdn.shopify.com/s/files/1/0432/6395/1003/files/nunirutobononebagu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/luwivulosofanoginanuniwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/minor_arcana_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0434/6563/8050/files/41258159791.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073ad.bin
2a439a6387007d91f42036e9a157faf2ab7603eb318dab860f54430d1ef04687
pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 4940 bytes
font_01_sfnt_off00008482.bin
e17f8be12a5ae4cb50b9afa8b38bb0888f99b715e8c49fd4d553b6ba9020a06d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8482 10388 bytes
font_02_sfnt_off0000a7fe.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FE 4324 bytes