Malicious PDF — malware analysis report

Static analysis result for SHA-256 af63c3cae590fced…

MALICIOUS

PDF

86.8 KB Created: 2020-08-30 22:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 026ab302f041a00f018bb5e6e2952a18 SHA-1: 641a7e4fa81694391056864ca663ccaed6ba5344 SHA-256: af63c3cae590fcedf42f300ed8c039eddef86e352b84a7ce7c763d9aab750374
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, pointing to a URL that appears to be a lure for software serial numbers. This URL is the primary IOC. The PDF also contains a link farm heuristic, suggesting a broader SEO poisoning campaign. The ML classifier strongly indicates maliciousness.

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.me/wix?keyword=autodesk+autocad+civil+3d+2014+serial+number
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/sexivagojow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/48954410739.pdf
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/jazudej.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/rewomov.pdf
    • https://cdn.shopify.com/s/files/1/0463/3110/1345/files/anonymously_report_suspected_drug_activity.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/stopping_by_woods_on_a_snowy_evening_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/porovurujapiganipuzul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdf
    • https://static.usrfiles.com/ugd/e02969_eec7148ea08a4b9c9b8bacf14b901be4.pdf
    • https://static.usrfiles.com/ugd/83b1b3_81366c13d8b147e399f34abb391229e4.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/muvebezenolemawonobefure.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/kevuvalibejoniwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3580/files/jozidikotuvanopetivaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.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_off00010a20.bin
7b0d53d42986e93aa4b1835e42051fd0a9a4f60cb0bed81a6d7a8d2d52f23655		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A20 5916 bytes
font_01_sfnt_off00011e32.bin
a6b9a379086340b5ba3d47bceffc6cd6585fbf525ec45b7ed66cf0549dbc4803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E32 15404 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.