Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb17c7019f8a35b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 18:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85182872da4a3c507167b9943c974f76 SHA-1: 0ead4838368570c736d176edc88c76e213f5b381 SHA-256: cbb17c7019f8a35b6eadb4faa61411c34a75607609b26fcd1b830210057e79a9
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=python+convert+png+to+jpg, which is presented under the guise of a utility for image conversion. This indicates a social engineering tactic to lure victims into clicking the link, likely leading to further malware delivery or phishing. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious redirector.

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.ru/pify?keyword=python+convert+png+to+jpg
    • http://files.globaltechwomen.com/uploads/1/3/1/3/131380558/1854932.pdf
    • http://files.creativeprintables.org/uploads/1/3/0/9/130969494/7712378.pdf
    • http://files.yogibjewelry.com/uploads/1/3/1/4/131483955/puwitiwisurom-wibofunux.pdf
    • http://files.dedetisone.com/uploads/1/3/2/8/132816096/gurijuxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/xovopamikovaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/finekefoluwutilugo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdf
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/drawn_together_uncesored.pdf
    • https://cdn.shopify.com/s/files/1/0430/1894/4665/files/57633027554.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/54895183182.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/21560949099.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/14963314741.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/aiag_spc_manual_3rd_edition_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/gibitilesarog.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_off00006d9f.bin
2fbd1c9fbed68e0fa1eca0db4b416c2b56fcb811ea926b124a326758144082c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9F 5016 bytes
font_01_sfnt_off00007ec5.bin
afeaac89e31ca92832ea0937c30ca5d0b5f05c5d5d6f809dc8e8d5caaa91ea11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC5 10144 bytes

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