Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb375f885079a1aa…

MALICIOUS

PDF

53.7 KB Created: 2020-08-26 14:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5581bf3f1f1189782bbfad7e12ec1655 SHA-1: 71b682cebcc75a168807a533654f4bcd703e69ad SHA-256: bb375f885079a1aab86ce4b476ca4623774169e97292759bfc30d4d66b879523
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link, 'https://ttraff.cc/pify?keyword=resumen+cien+a%25C3%25B1os+de+soledad+capitulo+2', is identified as a malicious redirector. The document body, though partially corrupted, includes this same URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a link farm and a malicious redirector strongly indicates a phishing or credential harvesting attempt.

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=resumen+cien+a%25C3%25B1os+de+soledad+capitulo+2
    • http://files.floristatwork.com/uploads/1/3/0/7/130775634/sadogosage-moxeva-zaxoku.pdf
    • http://files.serenity2cministries.com/uploads/1/3/0/8/130813461/wetowogodaba.pdf
    • http://files.brenleemcknight.com/uploads/1/3/0/8/130814611/nepifa-tasevobabosuvos.pdf
    • http://files.fourwallsnoceiling.com/uploads/1/3/1/4/131409098/65fcd9e.pdf
    • http://jirak.pensionplanningsolutions.com/uploads/1/3/1/4/131409508/8e77eb348.pdf
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/xuxozurateruromonukepu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/21688730251.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/1979141153.pdf
    • https://cdn.shopify.com/s/files/1/0436/9196/6617/files/10633569575.pdf
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/11672668211.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/wuxefeged.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/nyc_bike_path_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/the_good_morrow.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/nonegimojixij.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/mumusuvubazixamivam.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_off00009180.bin
d18fd6c6f0d99682f0f54e95efc0258c99ba0584a9ba6a6be67383cadea7ea13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9180 5472 bytes
font_01_sfnt_off0000a3c6.bin
92a0d17a824aaffb9a53d8c7ebb74c2f1f9ea1dbce4c97187da79b014c9582ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C6 10900 bytes

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