Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df64d09eda93a4c…

MALICIOUS

PDF

34.5 KB Created: 2020-08-11 12:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e247d5ffe1b87a4cb0626addafd7ac SHA-1: 96480a39d9b0619064833eeb19ec7422b7fb1951 SHA-256: 4df64d09eda93a4c492513c20c8b3277ddce275fa3e19f9cb19a6c7d9098e9c8
120 Risk Score

Malware Insights

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

The PDF file was identified as a malicious redirector and link farm. It contains numerous embedded URLs, with one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the URL https://ttraff.ru/pify?keyword=startup+enxuta+eric+ries+pdf, suggesting a lure to a malicious site. The presence of many external links indicates a likely attempt to distribute further malicious content or conduct phishing.

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.ru/pify?keyword=startup+enxuta+eric+ries+pdf
    • http://files.prestonsociety.co.uk/uploads/1/3/0/7/130775795/973bcb.pdf
    • http://files.heartofasiatravels.com/uploads/1/3/0/8/130813111/2174998.pdf
    • http://files.bespokenpodcasting.com/uploads/1/3/1/3/131397964/pasewagaxid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/tofilupigirurikevizaxanim.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/pigowafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/12_bar_blues_examples.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/matteo_carcassi_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/deduwiruvakaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/vojagavuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/zepade.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/8456290159.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/jolomubipifiraju.pdf
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/uniden_scanner_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0925/2250/files/greek_mythology_gods.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/jirilulowudafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/solaire_minecraft_skin.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/36052107046.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_off000049ae.bin
b67613002e4f143bef4f6c07acac628d1ff0800fa666e54244c5b876729b4275		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE 5288 bytes
font_01_sfnt_off00005bb3.bin
b48ba1515dbac5b5ace9789698a761faf1f871d12ac2e6c30834979f74d0b6b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB3 9752 bytes

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