Malicious PDF — malware analysis report

Static analysis result for SHA-256 e722083278164a83…

MALICIOUS

PDF

37.8 KB Created: 2020-08-25 11:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e275296df62a6d3031586ec469f7fc SHA-1: 58a94cae40b49c67bc0110b0762886f13973f0d4 SHA-256: e722083278164a83429785f2c23982180b29d3c42bd81b910f0015c3c59321ba
120 Risk Score

Malware Insights

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

The PDF file contains a link farm of 19 external PDF links, with the primary link leading to a known malicious redirector. The document body contains garbled text but also includes the primary malicious URL and one of the benign-looking PDF URLs. The heuristics indicate the PDF is a malicious redirector and part of a link farm, suggesting an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=bounce+fabric+softener+sheets+free+gentle
    • http://gigurur.coasttocoastroofs.com/uploads/1/3/1/4/131438188/7619818.pdf
    • http://xiwojumug.suncoastfl.org/uploads/1/3/2/7/132741009/4985c27f.pdf
    • http://sixesop.emgo.tv/uploads/1/3/0/7/130776257/5559803.pdf
    • http://vagurawu.dianedailydose.com/uploads/1/3/1/0/131071258/e2bb8df.pdf
    • https://cdn.shopify.com/s/files/1/0437/1002/1787/files/vadenukesigix.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/pofukimije.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/1423904739.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8903/files/fisibidipu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/bypass_free_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/popovodumozusoganakakex.pdf
    • https://cdn.shopify.com/s/files/1/0436/0660/5987/files/vabobafaxebi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/41413233059.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/xojotulon.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/54591696127.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/bypass_megasync_limit.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/alcohol_consumption_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0440/8469/1094/files/wigorosiforuseru.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/zikelo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6196/0091/files/komotividituratopetewow.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_off0000553e.bin
abf6eb412ac43cfd78e4c94a660c92b7fe6ea6e144972636c111ddcd1dc77ffe
pdf-font-stream PDF embedded font (sfnt) at offset 0x553E 5332 bytes
font_01_sfnt_off0000675c.bin
83932cb746cdc084316750c1fab8d467112395c8a3960cccba508721c686033b
pdf-font-stream PDF embedded font (sfnt) at offset 0x675C 10120 bytes