Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5abc15277e86d9a…

MALICIOUS

PDF

39.9 KB Created: 2020-08-18 14:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a3d13db7296a50c1e797fdbd2e8607 SHA-1: 206a50e7ac3ad65e59b5d15832636f1f2449d3ee SHA-256: f5abc15277e86d9a4842402c5994801ae77eecaaed92599e8b4d5d0bda2b6043
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bede+sixth+form+stockton'. This URL is likely used to obscure the final destination, which could be a phishing page or a malware download site. The document also exhibits characteristics of a link farm, with numerous embedded links to PDF files hosted on various domains, including Shopify. 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.com/pify?keyword=bede+sixth+form+stockton
    • http://files.kingfisherboatsontario.com/uploads/1/3/1/0/131071067/8469103.pdf
    • http://files.impactcdyouth.com/uploads/1/3/2/7/132740462/b8b5e9e49aea.pdf
    • http://wuzofeku.californiadroughttolerant.com/uploads/1/3/0/7/130738837/68b372dc.pdf
    • http://mowizu.drlindagedeon.com/uploads/1/3/0/8/130873851/lebinawi-kofisogenor-xenogodev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/66382067615.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8362/files/adapted_english_books_upper_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87743453122.pdf
    • https://cdn.shopify.com/s/files/1/0437/3453/2245/files/zaxosezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/90642879497.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/tepokemekenunivilobusok.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/goxozijusarefe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5009/9107/files/mugaximibupodoxunal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/sepujaxamoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/nowofinox.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_off00005dec.bin
dbad1cb62a58f81ad218eb3e5df5cf576a4bd7ef63ad192814078ec1bfcd95f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEC 5200 bytes
font_01_sfnt_off00006f86.bin
0ce4fef90c843d18007664e09acc72d6e87085a4ea2c283e880ef6aa8af10566
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F86 10380 bytes