Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb55e5c99a131dd…

MALICIOUS

PDF

48.3 KB Created: 2020-07-31 12:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1394d2bdd6d9f4852b36fa0a03c0f949 SHA-1: 53f64ff215df4f1abdbff7519bb756e7942db6e6 SHA-256: deb55e5c99a131ddf6ac1be5d50d07f0377ac4595eecb038d76b7b1b8661f421
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as 'payroll accounting notes'. This link leads to a link farm hosted on cdn.shopify.com, which likely serves as a distribution point for further malicious content. The SE_INVOICE_LURE heuristic indicates the document's content is designed to deceive users into taking an action, such as clicking the provided link.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=payroll+accounting+notes+pdf
    • http://files.meadowshomegardenclub.com/uploads/1/3/1/6/131606165/jemit_tezijesik_zukasagaboripe_zibusasulexefi.pdf
    • http://files.swatimetals.com/uploads/1/3/0/7/130739789/f86baf71e4f326.pdf
    • http://files.redhawksmusic.org/uploads/1/3/0/7/130775200/riledasuraj_dujudinep_gogatolewaro_dekan.pdf
    • http://files.fairydogmothertrainer.com/uploads/1/3/0/9/130969825/vavego-pubot-nodugi.pdf
    • http://files.ulveling.com/uploads/1/3/1/6/131637953/pefekufigebe-mipif-kobegulaji.pdf
    • http://files.swatimetals
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/bebodul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/wogumumiko.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/68389529869.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/padurusufavetilijutafavak.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/dudabewuzugerufita.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/36926213523.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/4766088147.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/53234432799.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5580/files/96770448824.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/17310937338.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/98378857740.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_off00007de7.bin
4a4257dffb23d7e55bc2e94f8a37b292ac4a1c541928a48596315d4630823455
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE7 5308 bytes
font_01_sfnt_off0000900a.bin
8a9ad4e9c16ee250d075b50589c6ec71bf950da3cd738a7942d3a9af9c5f4736
pdf-font-stream PDF embedded font (sfnt) at offset 0x900A 10536 bytes