Malicious PDF — malware analysis report

Static analysis result for SHA-256 2000befb0ead74bb…

MALICIOUS

PDF

38.2 KB Created: 2020-08-15 21:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1201a4d65ac60d4a7fbd214c44836880 SHA-1: 69441c409de04273c3fb94fbad2847090b9ada8a SHA-256: 2000befb0ead74bbc9aa6d0bfe9144e4975e4e5639f7b39897159f833b32e575
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, but some pointing to potentially malicious domains. The presence of a 'download button' heuristic suggests a lure to entice user interaction. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack vector. No scripts were extracted, limiting the analysis of direct payload execution.

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=numeros%20para%20colorear%20del%201%20al%2010%20pdf
    • http://xijoxujo.kriti-jain.com/uploads/1/3/2/3/132302963/tobuboselodulaw-sememikanekid-zesivebijalo.pdf
    • http://pogili.dvelights.com/uploads/1/3/1/6/131606758/826d55e6e32615f.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/nufogarewofupit.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/wedasosakovirututefilawo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/accounting_ratios_chapter.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/42184452732.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/55315151746.pdf
    • https://cdn.shopify.com/s/files/1/0440/0365/5830/files/burnout_syndrome_article.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/50867713598.pdf
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/89017352202.pdf
    • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/51629480383.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/wawujobakajalow.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_off00005761.bin
af59180fa52f1c6b5cfb73d0a9fc23afd07e64b052c71b466813c257810aeb65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5761 5464 bytes
font_01_sfnt_off000069e2.bin
4076c1879bbdf466a24ae5ae26dcfa12c3b06a1db59e2c3a857c348f59ee3a3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E2 9988 bytes

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