Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31f60c948d25a67…

MALICIOUS

PDF

43.0 KB Created: 2020-08-07 23:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48e4c54ae0bc31457883a6960c905279 SHA-1: aa21c7952219995d6f82ed99a7b01b6af9650661 SHA-256: c31f60c948d25a67de920b522980b32f6d32b1a009e72ce6f6a0072d0e12a358
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.com/pify?keyword=best+day+of+my+life+lyrics+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the song title and the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect the user.

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.com/pify?keyword=best+day+of+my+life+lyrics+pdf
    • http://files.carmelasansonephd.com/uploads/1/3/1/3/131382673/9354582.pdf
    • http://files.sfepiphany.org/uploads/1/3/0/8/130814052/korulu.pdf
    • http://files.energycyclingclub.ca/uploads/1/3/0/7/130739651/taguga_wufujiwigata_vekipokeruwu_nobutido.pdf
    • http://files.ausablevalleygrangefarmersmarkets.com/uploads/1/3/2/8/132815866/5129461.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/43970927472.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/tawewogizixubikazek.pdf
    • https://cdn.shopify.com/s/files/1/0431/3710/6087/files/28688450852.pdf
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/65765234050.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/bexuwufut.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/xumufapux.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/42183866571.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/sujabideluxewupujemesafa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/91429290659.pdf
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/75860505445.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_off00006a74.bin
6f4ed6ba2b222d4c9709d9d52ed18f2c82d90b5e32fe6cb984762b79fa14f420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A74 5452 bytes
font_01_sfnt_off00007cf8.bin
8f51b385e01ad278ea4f4f65957f7d2f382719281a69b63fe8b649f7eae22ede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF8 10036 bytes

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