Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e77eebac781d6d0…

MALICIOUS

PDF

43.2 KB Created: 2020-08-11 08:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d012f7beff31f0dd310ede78b8b87c9 SHA-1: 3c3e51e3c0bb81e29456816fc0446a3d933f4b42 SHA-256: 8e77eebac781d6d0bac2e8c51d567285f0c6484ab4eb09646605f331b54e2205
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=spamming%20tutorial%20pdf'. The document body also contains this URL and numerous other links hosted on shopify.com and various other domains, suggesting a link farm or redirection attempt. The primary goal appears to be directing users to malicious infrastructure under the guise of a spamming tutorial.

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.cc/wb?keyword=spamming%20tutorial%20pdf
    • http://files.heatherpringhealthandfitness.com/uploads/1/3/1/4/131437474/linenop.pdf
    • http://files.nadiasbombfoodtruck.com/uploads/1/3/0/7/130740193/babakageb.pdf
    • http://files.donnariverafurniture.com/uploads/1/3/0/7/130775145/9076309.pdf
    • http://files.kaufmanfieldguides.com/uploads/1/3/1/4/131453605/1183262.pdf
    • http://files.williamsnursery.shop/uploads/1/3/0/7/130776779/9637268.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/73319475985.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/jotodoninidimitani.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/35684399259.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/9227431149.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2808/files/cell_phone_icon.pdf
    • https://cdn.shopify.com/s/files/1/0431/6279/6186/files/xijebinonedumowewajat.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/47726508470.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tedix.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/wirefafamakos.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/fafixoxivefubafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/nuxaxolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/autoclave_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/62337769697.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/list_of_acceptable_i_9_documents_2020.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_off00006b5c.bin
e25eeb2a11cec5cafa07b5f022976923220450a09e37811674e21d8c4bf8a75c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5C 5288 bytes
font_01_sfnt_off00007d38.bin
92c7bb57dd294bb9bc677b65fc06e1264821f8f12820e37a2a626e8f235b822d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D38 10120 bytes

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