Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fc55319a77f3a9…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 04:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 821147e73966343db93224cbb92cd922 SHA-1: c833aad662699777ba8f8e666ad0031665756c62 SHA-256: 54fc55319a77f3a982d60b71ba56c670277f8893cafeff3e4fef9e914b618169
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many of which point to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=autumn+in+november+free', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious content or facilitate further distribution.

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/pify?keyword=autumn+in+november+free
    • http://files.kelly-johnston-art.com/uploads/1/3/0/7/130775366/mupaworamajatired.pdf
    • http://beman.lachlanbest3d.com/uploads/1/3/1/4/131438316/lumojuxi.pdf
    • http://foxavo.carlukecollies.com/uploads/1/3/2/7/132712615/xevaf-jezivenu.pdf
    • http://nejarugo.standrewsepiscopal.org/uploads/1/3/1/6/131637814/2b67af77.pdf
    • https://cdn.shopify.com/s/files/1/0432/1860/0103/files/beleridowanijejol.pdf
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/4139813172.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/ketoasidosis_diabetik_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/matenenatavufagetarexumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/sofifevufenesagagafowum.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/tiwawegexawusev.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/lake_eufaula_fishing_report_october.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/cubase_5_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/12791540440.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/android_version_list_release_dates.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/18909985455.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.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_off000051a1.bin
ab7a4765c01930c33230ed87908ba9d0be31a3d07ac1586e6192dc680b4e4782
pdf-font-stream PDF embedded font (sfnt) at offset 0x51A1 4680 bytes
font_01_sfnt_off00006177.bin
0aa83e099ba7b6abfc433245d32bcfd4b4c3f928dcf6c287bdfbb1e92b756da5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 2944 bytes
font_02_sfnt_off00006b7e.bin
323e49ff8adcda87342b5d9dc5baa859b52cccbfbd85b4af8f69f55c41b0f37c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 12632 bytes