Malicious PDF — malware analysis report

Static analysis result for SHA-256 393c4f3420b088f4…

MALICIOUS

PDF

41.8 KB Created: 2020-08-15 20:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b1cd47aec5127e465773870a8e1000 SHA-1: b8065364da782177cc63cd1bc8443ab85f4a7634 SHA-256: 393c4f3420b088f42197829cbf31ce908549f17390e403581b48b00d7b2fc7a4
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=transfusion%20sanguine%20au%20cameroun%20pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm used to obscure the ultimate destination. No scripts were extracted from this sample.

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/wb?keyword=transfusion%20sanguine%20au%20cameroun%20pdf
    • http://files.gcasoccer.com/uploads/1/3/1/3/131398473/jobixejeliwako_kiribowipiliv_xojejerer.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/fiwuwevetaxomowinip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3563/1514/files/rumijumuluj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/zoxonadiwaxexowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/33161710508.pdf
    • https://cdn.shopify.com/s/files/1/0431/8923/9969/files/puten.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/algebraic_fractions_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/biology_practical_class_11_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/36352823727.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6948/files/arapa_yaz_defteri.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/94110873424.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/soxujelidatibexagelagemat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3110/files/95786809151.pdf
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/zetazamujeni.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_off0000625f.bin
db2a83e25008ded0fbab92441341069d40c6b33ff04fdf49ac2d2b87b779c9ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625F 5392 bytes
font_01_sfnt_off0000749d.bin
7fd9e6fe540df0c9093494b81114e6de71aa154d75866862f8f512795c408a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749D 11924 bytes

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