Malicious PDF — malware analysis report

Static analysis result for SHA-256 5473d210651c88dc…

MALICIOUS

PDF

46.8 KB Created: 2020-08-09 08:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa104cc13072381a7431537d437b6c44 SHA-1: 85151dac579181adea54719d455a52e9efde2df7 SHA-256: 5473d210651c88dccff405efb6c89d3fa829840c65f060809d26d916417eda7e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=supreme+upvc+pipes+and+fittings+catalogue+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt to increase visibility.

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.cc/pify?keyword=supreme+upvc+pipes+and+fittings+catalogue+pdf
    • http://files.jeanscookiejar.com/uploads/1/3/1/3/131398473/02762.pdf
    • http://files.fourseasonsbuilders.biz/uploads/1/3/0/7/130740589/jonus-varuxifoxonariv-mesuxolazupep-budolotirevox.pdf
    • http://files.fridaynighthiphop.com/uploads/1/3/0/8/130874496/af9f7ba14cce939.pdf
    • http://files.northshorehomes-seaside.com/uploads/1/3/0/8/130873894/mezavo-gevexalegazizox-lenalitasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/36093520753.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/tabesuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5546/files/57533295331.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/47220052213.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/99078475004.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/fipedinupijobopom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4031/6319/files/lasigosijumegidab.pdf
    • https://cdn.shopify.com/s/files/1/0452/6263/5168/files/alloys_of_copper.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/wagorewofixopezokep.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/lomova.pdf
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/xelufuvokevatetufubesu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/ejercicios_para_aumento_de_masa_muscular.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_off00006253.bin
2fbc0b32ed74bbf2492011447d0ae035d1382f1cf465722f4b00dde0e1c22d92
pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 5520 bytes
font_01_sfnt_off00007501.bin
36592ab117798f36aedf4aee69280ede0e7bce9721a7257a2d1e44a11e3e4b7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 13396 bytes
font_02_sfnt_off00009fb6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB6 4324 bytes