Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ee41c8e4e75725…

MALICIOUS

PDF

47.2 KB Created: 2020-08-13 12:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1e90c412d3c5f229ad1562d1a8b474f SHA-1: 89d304c44bc2ab5523ac03795816e0e0b871f14c SHA-256: d6ee41c8e4e75725f7040c6fd37b19c9de165c8a88c04bb0f7fd142314cab0d9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO poisoning. One critical heuristic indicates a malicious redirector link, which is the primary attack vector. The document body, though corrupted, contains the URL 'https://ttraff.cc/wb?keyword=properties%20of%20matter%20worksheets%20for%20middle%20school', suggesting a lure related to educational materials that redirects to a malicious site.

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.cc/wb?keyword=properties%20of%20matter%20worksheets%20for%20middle%20school
    • http://files.shopnaturallyinspired.com/uploads/1/3/1/4/131482821/1300473.pdf
    • http://tuzopan.qianjunlyu.com/uploads/1/3/1/4/131453133/mubivagowatuxo.pdf
    • http://petaba.brendawehle.com/uploads/1/3/1/4/131453574/6385cadce.pdf
    • http://tudefefe.charlottecountyoutreach.com/uploads/1/3/1/4/131438641/liwagix-fepegudujubi.pdf
    • http://files.roddyconsultinggroupinc.com/uploads/1/3/1/4/131482931/sezagexeturew.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/arquitectura_sostenible_renzo_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3069/files/jifagegupepipifezofukutex.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/jezitekafojamufif.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/34104418423.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/32417031835.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/mekanisme_amoxicillin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/pathophysiology_of_disease_lange_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6364/7131/files/kaluzinisobup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0447/0479/2729/files/xelapibalife.pdf
    • https://cdn.shopify.com/s/files/1/0434/4663/2615/files/princess_bubblegum_season_8.pdf
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/wuwiduna.pdf
    • https://cdn.shopify.com/s/files/1/0434/4437/1613/files/destiny_2_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/gumawenarig.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/laryngopharyngeal_reflux_disease.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_off00006f52.bin
3fb009bc8aa9ce0642863f7dc43bb61e76a2d3d7ab2e720dce5c2f5e815dfd3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F52 5552 bytes
font_01_sfnt_off0000821e.bin
726844d164ab5a628e99f4e6301da3af4fb4f61af19213b2fdfaa3c835fe26d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821E 14208 bytes

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