Malicious PDF — malware analysis report

Static analysis result for SHA-256 2466b39be19ff666…

MALICIOUS

PDF

36.4 KB Created: 2020-08-03 11:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b0d5ad174c2befd4272bdafa630063c SHA-1: ba1ef1f741de849ca71a84a559e8158a887e7fb8 SHA-256: 2466b39be19ff666b9f3d2e1ed78eaa72586e5d4b8ed31a794eac5c4cd6cc308
140 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'social security form w- 4v'. The presence of a callback phishing lure heuristic further supports the conclusion that this document is designed to trick the user into interacting with malicious links or potentially calling a fraudulent number.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=social+security+form+w-+4v
    • http://files.fourpointsinc.org/uploads/1/3/2/3/132303320/kobenafo.pdf
    • http://mitovujul.chwpress.com/uploads/1/3/2/3/132302939/xisatoroteka-ludozaduv-pixikug.pdf
    • http://guwel.kwhitewc.com/uploads/1/3/0/7/130775823/5204515.pdf
    • https://cdn.shopify.com/s/files/1/0437/8981/1861/files/tikigenib.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/1531070503.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/33467785837.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/bubalalugixituzetadazawi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/3627440266.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/jurikup.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/botuzuvozawabeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/ruwox.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/17986424476.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/lopabejajatenozid.pdf
    • https://cdn.shopify.com/s/files/1/0440/2721/6037/files/70260368980.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/craftsman_5600_watt_generator.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/87391127852.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/ziposijekeba.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_off00004f09.bin
fa185454f83b8ca6f7e7da0a640fc32f6dd8f6eec741d1757407a31599888f16
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F09 5504 bytes
font_01_sfnt_off000061d8.bin
023016e0b87eb82d857d6cc9292c7c9310031f97adf360dcff126378502b5af5
pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 10264 bytes