Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a817635d47ce47…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 09:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 858c4ee57bdd76d7eb4de94ce8b1c9d6 SHA-1: 9e1df6e23be6c7d1c9d7b192e19516120798a41d SHA-256: f5a817635d47ce478af1dbfa7e56ce0f2a292afbb9af2a4d1617a6fbaeee3074
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=atk+package+driver+asus'. This URL is designed to lure users into clicking on it, likely leading to a phishing or malware download site. The document body, though heavily obfuscated, contains references to 'atk package driver asus', reinforcing the lure. The presence of a mass external PDF link farm further indicates malicious intent.

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=atk+package+driver+asus
    • http://dapemof.simplyglamorousdesigns.com/uploads/1/3/0/8/130813306/881b39afbcb558c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/kejunifudodik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5920/files/didojixasafetimasid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/davojiduwu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/company_logo_quiz_answers_level_9.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/rutudiwuruzefowa.pdf
    • https://cdn.shopify.com/s/files/1/0448/1299/2674/files/english_to_bangla_vocabulary_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1483/0749/files/autodesk_cfd_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/mediwul.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/wuwewepune.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/rubixujo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/titijugume.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_off0000682b.bin
05b1977642ea13b076ba69031bad8369b843b7499233406e20930e55bb808dca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682B 5320 bytes
font_01_sfnt_off00007a58.bin
05623e81fb8d612a2aeaa3888a37741585a01e1713ab4a4905b39b211cbdae8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A58 10052 bytes

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