Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae88affe9daa896…

MALICIOUS

PDF

39.7 KB Created: 2020-07-30 16:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a054c66ee740a7f17d4d74b41d0b47ff SHA-1: b7b51ac499fa315b5a1d7316dc8ce5ec5c9bf6e0 SHA-256: 4ae88affe9daa896fb9bf4567e974d4d075eeb2dedd018c463289f1df41eebbf
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free download for religious texts. The link points to 'ttraff.com', which is known for malicious redirection. The document body, though heavily obfuscated, contains keywords related to the lure. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of an SEO spam campaign to improve search engine ranking for malicious content.

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=biblia+ortodoxa+pdf+download+free
    • http://files.labclaes.com/uploads/1/3/0/7/130775607/1209768.pdf
    • http://files.laurelturkacupuncture.com/uploads/1/3/1/4/131438018/xajigowiwo-lebimi-zezujagebexij-fexakalat.pdf
    • http://files.sarahhoppe.com/uploads/1/3/1/4/131407292/3780321.pdf
    • http://files.helpsaveourkids.org/uploads/1/3/2/6/132681611/c4452415272.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/fivonujufozitubifirukeko.pdf
    • https://cdn.shopify.com/s/files/1/0431/7685/3664/files/funeted.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/88814187919.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/92530996665.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/7559551498.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/rasawisosidixujovenowesev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/tasubedebazekov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9588/3925/files/59948685204.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/guveworibiwopafefuvan.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/91253694122.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/38075267043.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_off00005e74.bin
8624566df9b45adfca48abe52b9effa51f23779062bed00757989e64fe2b4858
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 4992 bytes
font_01_sfnt_off00006f85.bin
60c8df33a3f97442c122b426a1ff2349eb1b6f53dea1c00ba06b67306b191f52
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 10092 bytes