Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abb6aad587023c4…

MALICIOUS

PDF

60.9 KB Created: 2020-08-15 02:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60a18f7c25bd45df080b5d435f38c09a SHA-1: 8e590fc7a08fe6fdc8f746afadc315cab5b3d84a SHA-256: 3abb6aad587023c48e205aced6e258cc8483c2aee3d84ec4715ab5320633f530
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting the primary intent is to direct users to malicious infrastructure. No scripts were extracted from this sample.

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/wb?keyword=8th%20grade%20language%20arts%20fun%20worksheets
    • http://files.seriousweightgainco.com/uploads/1/3/1/8/131872079/fcc6e606.pdf
    • http://files.thedailydiplomat.com/uploads/1/3/1/0/131070597/8560553.pdf
    • http://nitoki.rmahf.org/uploads/1/3/0/9/130969332/3641754.pdf
    • http://files.livinglearninglandscapes.com/uploads/1/3/0/9/130969658/6740847.pdf
    • https://cdn.shopify.com/s/files/1/0439/9605/3662/files/personal_pronouns_esl.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/ridiloxorinezematipom.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/starbucks_singapore_menu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/kotor_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/3778315124.pdf
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/sominirixaxipo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0221/4046/files/meiosis_mitosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/12001251291.pdf
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/dazuvaromumovibega.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/nekavirafap.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8912/files/98523134468.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/89689351674.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/77614675172.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009925.bin
9d74778742d8412e3113ea1c8112ec623d920f4e1dcfd3af317d13b31bf918a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9925 5424 bytes
font_01_sfnt_off0000ab9f.bin
261658dfddb7c3537cb7741391e4b7c8d3872231791b9fe48a2a71c20f8a1b71
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB9F 10288 bytes
font_02_sfnt_off0000cefe.bin
1bdb952dea1c6aa7c0b742d474ebfef23f69e103f1a138e4eb72ec3dfd677210
pdf-font-stream PDF embedded font (sfnt) at offset 0xCEFE 16232 bytes