Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe79e1f623973d0…

MALICIOUS

PDF

41.4 KB Created: 2020-09-03 23:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f6f6e01d14b51539573d25b99ea2f6 SHA-1: 446387508be5f3767f10aa005b9c68d966ffb177 SHA-256: afe79e1f623973d000aecced9dce47c533be9e774c9d7e97c04e2ec8e7c92968
120 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of the primary links directs to a known malicious redirector. The document body appears to be malformed or heavily obfuscated, but the presence of the URL 'https://ttraff.me/pify?keyword=asciidoctorj-+pdf+mvn+repo' suggests a lure related to software repositories, likely to trick users into clicking through to a malicious site.

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/pify?keyword=asciidoctorj-+pdf+mvn+repo
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/zopog.pdf
    • https://cdn.shopify.com/s/files/1/0440/9199/8360/files/adobe_online_signature.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/moposeworubexegevinur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/basic_electrical_engineering_fitzgerald_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/86608624535.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/5985395525.pdf
    • https://cdn.shopify.com/s/files/1/0437/0795/7400/files/suvigepelula.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/time_connectives_ks1_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/96038225700.pdf
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/86905091161.pdf
    • https://static.usrfiles.com/ugd/9d869b_a763c579a8ae4ae289d400d54521ff73.pdf
    • https://static.usrfiles.com/ugd/158fb9_6506fe5f439a46b3bb0a9e9f4c32e8ce.pdf
    • https://static.usrfiles.com/ugd/16a96a_7ea032373b42453ab238ed5f9e855574.pdf
    • https://static.usrfiles.com/ugd/9b2d9b_19beb572e60d403a92b223e52c8ee11d.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_4d159ebaa06f49cbb6f11c5c0a435e23.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_off00005c9d.bin
f07f430060afe3250aefa9c799a6e4a38d095435563e1682b7e8e7423191c10e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9D 5216 bytes
font_01_sfnt_off00006e5d.bin
04d7fd5dc49244a2f7d9b068b3fc669bc20ee495c5343075b9da1ac4f5c68e39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5D 13540 bytes

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