Malicious PDF — malware analysis report

Static analysis result for SHA-256 db1f11f8d10f660b…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 18:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d38a4246c2c100a225e19f3106207c21 SHA-1: 2cae4fc237a5487191ffede3aeec831c33cfbeb0 SHA-256: db1f11f8d10f660ba11ce8daed3cffc631a161212eefff1a57d76499d8ddbc4e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a lure related to ADP direct deposit forms, aiming to trick users into clicking malicious links. It includes a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=adp+workforce+now+direct+deposit+form'. Additionally, it hosts a large number of external PDF links, many pointing to shopify.com, suggesting a link farm for SEO poisoning or traffic redirection. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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.com/pify?keyword=adp+workforce+now+direct+deposit+form
    • http://nasedes.centraloregonfillyourpantry.com/uploads/1/3/1/4/131453858/4c33886307.pdf
    • http://files.biblicalmaster.com/uploads/1/3/2/7/132741555/2286790.pdf
    • http://files.azanow.org/uploads/1/3/2/7/132710753/8345340.pdf
    • http://luvaxol.mtcrescentcrafts.com/uploads/1/3/1/4/131407558/suresu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9750/files/vorulefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/dupifusemiruxaxademek.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/dexeduz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/95935454638.pdf
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/17343114558.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/wutevoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/83775588108.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/c_est_et_il_est_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0434/5892/0610/files/dakatizovaletogabajozen.pdf
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/legapixav.pdf
    • https://cdn.shopify.com/s/files/1/0432/3265/7568/files/android_bitmap_image_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/2537/4103/files/84497845308.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_off00006145.bin
a82ff79572a77edd7d204b3ea50d81466f1f3ca721b915867008e63b8f3c462a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6145 5204 bytes
font_01_sfnt_off000072f7.bin
32ad4aebb695c8393c7f4d0f377c901e7ceeb46ee7b7e3338950a2ba08e5b460
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 9628 bytes