Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c9b700296d9a7a…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 23:30:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0cece736f21392909cb74e98810aab4 SHA-1: 13a1b3d331a2b4e6a904e9bf5168d59462eeb759 SHA-256: d6c9b700296d9a7a84b924c2e2b1cdfba10fe2b15a518de034c8fb10601b44eb
130 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 download for piano sheet music. The link leads to a "pify" service, which is a known redirector. The document also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve the ranking of the malicious link. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggests a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=boogie+woogie+piano+sheet+music+free+pdf
    • http://files.larisamantordressage.com/uploads/1/3/2/6/132683181/duvusujelefawa.pdf
    • http://files.ascension-columbus.org/uploads/1/3/2/6/132681501/gubodonovamez-zexurupalu-sulodifa-poxaxa.pdf
    • http://files.jmjfitness.co.uk/uploads/1/3/2/6/132682386/jilebojuzoxen.pdf
    • http://files.evelandfarm.com/uploads/1/3/1/4/131436971/93088aafe1eb3.pdf
    • http://files.fairytalejourneysbykayla.com/uploads/1/3/0/8/130813134/92d767786.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/wutele.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/18617317928.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/21638546308.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88490435411.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/36449286725.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2199/files/49907567033.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/robaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/38646928796.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/dopedolupapusamaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/bavexomavekarapotujigubi.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_off00005dcc.bin
a824f54477aeb8c454824d76d50339a38bae638213e944ba33294fc12729ac5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCC 5676 bytes
font_01_sfnt_off0000710c.bin
9b2fba998326f39714c2331ebafc9c01f1823c81b5292909cab239ce51ad7d5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 14192 bytes