Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d72fbf049039d1…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 00:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86fb54988274f447fe2182cdc1901961 SHA-1: c84145a18446661f604ae82ba640e63cbed9db7f SHA-256: 44d72fbf049039d125ba8871378f141c7e1ba96f34949e1a28521b121ca65315
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 Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One prominent link, 'https://ttraff.ru/pify?keyword=blue+butterfly+wallpaper+app', is flagged as malicious and likely serves as a redirector to a phishing or malware distribution site. The document body, though heavily obfuscated, also contains this malicious URL and several benign-looking Shopify URLs, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be the malicious redirection via embedded links.

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=blue+butterfly+wallpaper+app
    • http://files.beadedtreats.com/uploads/1/3/0/7/130775249/324405606.pdf
    • http://rutiru.drtmobilevetcare.com/uploads/1/3/0/9/130969953/vesiwajefif.pdf
    • http://files.jimpendergrass.com/uploads/1/3/2/8/132815961/xabixejeje-nenowapiwage-jisematonalon.pdf
    • https://cdn.shopify.com/s/files/1/0430/0269/1743/files/livarofexudobapavowif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8474/files/favigupunetofunigijorajeb.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/osrs_earth_battlestaff.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/14421970313.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/31835159262.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/18182200374.pdf
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/arun_sharma_data_interpretation_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/3414657958.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/baazigar_film_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/jefinabober.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/kigazuweg.pdf
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/brittainy_c_cherry.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/yaesu_vx-_7r_manual.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_off00006c62.bin
1818cb71712bd5449a153c17760857932cfcdf2e9d81aa5ce5c0d3363cba386f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 5100 bytes
font_01_sfnt_off00007de9.bin
d3a8ddf5a68840f30497584253d90f986d456f094340f8aec607bd8df71a9609
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE9 10796 bytes