Malicious PDF — malware analysis report

Static analysis result for SHA-256 302b070f0571303d…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 02:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598c8ab591b743017e8ccd0856e071a5 SHA-1: 3d2ec5e8b9e6eb00b5907f139f8d3c28037948e0 SHA-256: 302b070f0571303d6ceb36ea1df78f3adb0f0abbb5e0dfac94ea4b9a54ff9fba
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The document body, though partially corrupted, contains text related to an 'lsat study schedule' and references the 'wkhtmltopdf' tool, suggesting a lure to entice users to click on the numerous links. These links likely lead to phishing sites or further malware downloads.

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=3+month+lsat+study+schedule
    • http://files.imsarc.net/uploads/1/3/1/6/131606815/ronitu-titowowalus-nopewidaroz-junozamegajomi.pdf
    • http://files.girls-build.org/uploads/1/3/0/8/130814717/digizurugeget.pdf
    • http://files.mrsararadian.com/uploads/1/3/1/4/131453676/725d0ad5d8b20d.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/47756553728.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/tizuzabikoriwinivalukada.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/vusinafovute.pdf
    • https://cdn.shopify.com/s/files/1/0438/2277/6480/files/buwejufepusirogilunev.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/41272126555.pdf
    • https://cdn.shopify.com/s/files/1/0432/8718/3515/files/81416852337.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/gonijifaxofolizuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/blood_vascular_system_of_herdmania_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/1277/6351/files/85549864880.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/wavowogafexevut.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7545/files/34243903055.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_off0000623b.bin
48f94b9a64a6cd7b126edb1e83a46df3a108ba2f46bff680b6e2b16aea17ca9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623B 5256 bytes
font_01_sfnt_off000073f6.bin
3ca06025c02b72cd8e6adfd72f6a67b29969d26bd07ecd1185cfb1e7e3bd75ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 10132 bytes

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