Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b660d750b184e4…

MALICIOUS

PDF

43.3 KB Created: 2020-08-21 19:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf0062575d3f9a549b7fd928100e8245 SHA-1: 41866d7092d8fd99252da702aa4ac74933574e36 SHA-256: 38b660d750b184e4c14d1b418e2815540d948a60d1c4b8dc026334db72b565c8
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify but point to potentially malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=pump+selection+guide+grundfos'. The document body also contains this URL, suggesting a lure to download further content or redirect to a malicious site.

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.com/pify?keyword=pump+selection+guide+grundfos
    • http://files.drakecreekkennels.com/uploads/1/3/2/7/132710603/kuzarukokujodazena.pdf
    • http://files.eugeniojedimartinez.com/uploads/1/3/0/7/130776151/dedunomirozite_bodewesem_sinolorekesawab_sogozav.pdf
    • http://fakisajip.harmony42.com/uploads/1/3/0/7/130739275/lunitekowanevin-riluruzevogem.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/bengali_language_movie_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/87609237677.pdf
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/sorcery_gamebook.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4750/files/17975660146.pdf
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/jspdf_autotable_multiple_tables.pdf
    • https://cdn.shopify.com/s/files/1/0447/9241/4369/files/fuwarowasakexupobukok.pdf
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/51173059162.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7454/files/navarolifojif.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/25575429916.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/57667900277.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3935/files/fesokasuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/gufafunozuviliz.pdf
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/74338621897.pdf
    • https://cdn.shopify.com/s/files/1/0440/7282/9078/files/63270931203.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_off00006123.bin
16398fe04c6ef708508d294e3628a149ffc7d3cafc495e3441252d972e56d451
pdf-font-stream PDF embedded font (sfnt) at offset 0x6123 5264 bytes
font_01_sfnt_off000072f3.bin
4c740868f9f75306cf6b3500598db97a9e175b17af51850601bf50531e9cf801
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 14328 bytes