Malicious PDF — malware analysis report

Static analysis result for SHA-256 477b2efd309d223a…

MALICIOUS

PDF

60.7 KB Created: 2020-08-30 05:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af97b5090a0e0757c35eb0725d12b3a7 SHA-1: dca7fbe9c0ede336637e69377bc516d1ea35fdfd SHA-256: 477b2efd309d223abef99007c81b068b21eaffba2d68ff6821d1f70cad145c72
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=possible+desync+detected+on+frame+0
    • https://cdn.shopify.com/s/files/1/0428/4032/6300/files/nipibiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/95805861224.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/books_of_the_bible_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/nobajewokewizixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/popobo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/anunnaki_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/8115/2152/files/underswap_sans_fight.pdf
    • https://cdn.shopify.com/s/files/1/0448/9697/7051/files/mufok.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/providence_alain_resnais.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/kedetoterugubojapegur.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/software_serial_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/john_deere_3020_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/marvel_heroes_2015.pdf
    • https://static.usrfiles.com/ugd/a18aa6_1647dbb190bf4f638724c9cb0fc39861.pdf
    • https://static.usrfiles.com/ugd/0df15e_24fba62cb29844d991cf1db5ec794222.pdf
    • https://static.usrfiles.com/ugd/b8c837_5115728ce64343c68e1683551c93fbcf.pdf
    • https://static.usrfiles.com/ugd/b8c837_45f32cf3ec2948f5b6d9871cdedec016.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_off0000af00.bin
09f15a5b3da161bb749ddba6cd299d298f68414a341af3bb79fafcb62f250dcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF00 5552 bytes
font_01_sfnt_off0000c1bc.bin
6d0d3b26432f53cb8dd47fefa9086871b5d5529af9e4ad97a725544bfe3be4b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BC 10468 bytes

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