Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27261ec5921c9d7…

MALICIOUS

PDF

50.8 KB Created: 2020-08-10 06:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05f115d241cf1fb3bc97605d3953b408 SHA-1: 4dc61ea458134c9fd75691a3591080daba30d4f5 SHA-256: e27261ec5921c9d7a67d6a6a1cd4c3a00456c51b6a1c1bd5f4af676ae0eb44ef
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a redirector link to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=bruchgleichungen+pdf+mit+l%25C3%25B6sungen
    • http://voxada.nicewebb.com/uploads/1/3/0/9/130969352/sovumavuzalitoxunal.pdf
    • http://files.shopwilla.com/uploads/1/3/1/4/131409526/ziroli-tuvez-xazulodik.pdf
    • http://files.shoolaoyin.com/uploads/1/3/1/0/131071037/1229921.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/vidyasiri_scholarship_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/34301942090.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/wusinabutubididu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/66768981876.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/wadedazogovovog.pdf
    • https://cdn.shopify.com/s/files/1/0449/7866/7688/files/business_plan_sample_for_coffee_shop.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/22819047574.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/simirerexin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/carmina_burana_parts.pdf
    • https://cdn.shopify.com/s/files/1/0427/7384/0038/files/98135323047.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/automobile_all_parts_name.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/chernobyl_prayer_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/maxofesoraranafitisupugev.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/
    • https://cdn.shopify.com/s/files/1/0449/7866/7688/files/business_plan_sample_for_coffee_

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cee.bin
3db05b8f5b2280c52491fb74e457c5284b9d8b816d8460c1ecc17aa3adb93321
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEE 5544 bytes
font_01_sfnt_off00007f70.bin
1c227b7cadf22f0784b25b6dcea00e640490ea209140e883932bf17d19a642c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F70 11892 bytes
font_02_sfnt_off0000a6db.bin
8a9247f046b734b3b64019f92f757ae4b0aee7d622ea5b761ee865a4f3d8211e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6DB 16088 bytes