Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c29c6d85932a4d7…

MALICIOUS

PDF

38.3 KB Created: 2020-08-18 16:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04ccf2095bc805186ecc8d4e8b5b51e1 SHA-1: 949d5d4f9aec1a939c4703eedeeb1fbcb3e6552a SHA-256: 4c29c6d85932a4d7db17357137c68eb6bc139aeb57965aecde9b0b9cc4ccc6d4
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=ballerina+full+movie+in+english', is designed to lure users by appearing to offer a popular movie. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, some of which are hosted on potentially malicious domains. The ML classifier strongly supports the malicious nature of this PDF.

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=ballerina+full+movie+in+english
    • http://kuvawa.languageartswitmsbell.com/uploads/1/3/1/3/131398008/zizixosejofafu_kesad_resoz_duzap.pdf
    • http://gitati.wetfinishes.com/uploads/1/3/1/4/131453109/rovunolilekovidonila.pdf
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/tavapazafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8302/files/welewuzoketij.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/88464874789.pdf
    • https://cdn.shopify.com/s/files/1/0440/3462/1590/files/supezuwokinob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/introduction_to_mathematics_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/wekelefowuxosufubabapu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2589/0466/files/zexizevalinivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/60326981835.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/blood_pressure_chart_by_age_and_weight_and_gender.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_off0000577d.bin
55b13f4d342f71a40558291917d50d1610360bd890f252442c444b9008ff008e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577D 5288 bytes
font_01_sfnt_off00006959.bin
3e132545d337e02dfaadeceb89a9917b45ce94eae690c0f768fb5a7187c376b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6959 10380 bytes

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