Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e4be4011a42abd…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 02:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92c9fb1bd2526f24c8a38735d781bcf5 SHA-1: 4c9f624ed0e51d0b51b69b5a9cf2c14e4353a46d SHA-256: d6e4be4011a42abdb8d92f2b5c8831d5e004d0a4af8a04ea47d3081d58ae84d5
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a download button, intended to lure users to a malicious site. The document body, though heavily obfuscated, contains references to a 'monthly budget planner template printable' and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm for SEO poisoning or to obscure the ultimate destination.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=monthly+budget+planner+template+printable
    • http://texun.stevnickbackpackers.com/uploads/1/3/2/6/132695675/e1183cb2a74f59.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/26806569901.pdf
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/adhesive_otitis_media.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/telecharger_oxford_picture_dictionary_english_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/41586998976.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/24117252834.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/35168681385.pdf
    • https://cdn.shopify.com/s/files/1/0435/1760/8090/files/bansuri_flute_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/polar_bear_bowling.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/nirugal.pdf
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/malezatekisumilu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/guacamelee_super_trophy_guide.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_off0000693d.bin
c16bb8d4e760148d38d267ca85e3323f2cecb1a67e0389f1df48bb636cfd8991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693D 5444 bytes
font_01_sfnt_off00007b9d.bin
acfbad3eaf107331191ef80adbb9f7de2a7404bfc5ad0e379107d36db633aba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9D 10060 bytes

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