Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3bd9efbba4b972…

MALICIOUS

PDF

45.2 KB Created: 2020-08-27 21:21:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83b43831dfd37323fd81d40141812d83 SHA-1: b38d62569fbc1fab68018d4d590787954c8754d2 SHA-256: ec3bd9efbba4b972d40f67e3a576daa45e0edf2f1b54eb7d27818aad3853418b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=track+1+2+3+generator', is identified as a malicious redirector. This suggests the document is part of a link farm designed to direct users to malicious content, likely for phishing or malware distribution. The presence of the 'wkhtmltopdf' metadata also indicates the PDF was likely generated programmatically, which is common for spam campaigns.

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=track+1+2+3+generator
    • http://zurov.flowerdeb.com/uploads/1/3/1/8/131856166/didozepuj-bafabovorusiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/berichtsheft_vorlage_shk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/bukipibelavebot.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/pasataliwifukewekupubaxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6001/6790/files/speedbit_video_downloader.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/coulomb_s_law_examples.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/84185278856.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/81472314162.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/digikiripiloxesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/59988727655.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/pozipalejakimotevowojojep.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/bernina_830_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d60.bin
777f3f2373ad27be90e1efd7ac8ca55ab75cf57f2e4a51c8914792cb2893047e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 4856 bytes
font_01_sfnt_off00006df0.bin
c8ab1f3d6ce5d4898e70172ca9273590a62bfd2faa4dd007003333e414ddce18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF0 14048 bytes
font_02_sfnt_off00009a1f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1F 4324 bytes

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