Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b2295de2df4df4…

MALICIOUS

PDF

33.4 KB Created: 2020-08-03 11:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 864ac6f792398a7e486bdbf783f0ba27 SHA-1: c8e1a6e295f7a70255b9f1f5ddd9a316bce7642a SHA-256: d5b2295de2df4df4ead9f89525fcdd6d516d7bef7679ff0db9109da0e29b9d12
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Autumn leaves piano pdf free' and includes the primary malicious URL. This suggests a phishing or scam attempt designed to trick users into visiting a malicious site by appearing to offer a free PDF.

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=autumn+leaves+piano+pdf+free
    • http://files.leesteadmanwelding.fr/uploads/1/3/1/4/131406960/zoxekamubigot-xutunewi-daxetit.pdf
    • http://files.lcloreporter.com/uploads/1/3/0/7/130775607/leviw_nakax_zagoduxukulazir_dizawa.pdf
    • http://files.tiedyeharvest.com/uploads/1/3/2/6/132695242/xatojenigebufide.pdf
    • http://xivov.makeih.co.uk/uploads/1/3/1/3/131380042/vejakagojej-fibiwirog-nodupal-jiregogotukimif.pdf
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/xofate.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/11516054511.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/40153202518.pdf
    • https://cdn.shopify.com/s/files/1/0433/6759/6191/files/8308428156.pdf
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/mowuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/12810196971.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/pugutoraribuzikajibeme.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/bafitona.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/netanoxurunorolov.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/banesazowoxol.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/sogenas.pdf
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/nujirazubez.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_off00004508.bin
733073bca54950fb727feea75890fd462abd6ce7b4939da9869ddc41f0aacbb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4508 5236 bytes
font_01_sfnt_off000056cb.bin
598fdfb3ffb9e177c1d129a48a19faa24019ba1b95730f9c5a3d514fe84ae38e
pdf-font-stream PDF embedded font (sfnt) at offset 0x56CB 10040 bytes