Malicious PDF — malware analysis report

Static analysis result for SHA-256 47317fdb23f96543…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 18:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a193342121df2df4af396c8891d92589 SHA-1: a2b5fb628586be2911a84f70a403ebac49744cce SHA-256: 47317fdb23f965437763913a03a9c8572ba2c941acc87079a99b6859d84b16b0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily corrupted, contains the URL https://ttraff.cc/wb?keyword=english%20to%20swahili%20translator%20pdf, which is flagged as malicious. This suggests the PDF is designed as a link farm to distribute malware or conduct phishing attacks.

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/wb?keyword=english%20to%20swahili%20translator%20pdf
    • http://files.duffybookbinders.com/uploads/1/3/1/4/131437676/vugelelok.pdf
    • http://files.amberfloradixon.com/uploads/1/3/1/6/131606984/negofugidumosisoxi.pdf
    • http://files.cfbands.com/uploads/1/3/1/3/131384173/gejikiwotoberi.pdf
    • http://files.neilmckenzieyouthfishingcontest.org/uploads/1/3/1/6/131606127/1963708.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/xaxopaxinoses.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/gisatusajogabupudix.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2783/files/singly_linked_list_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/vumubipepi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/hemolytic_anemia_journal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/39861341667.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/azeitona_livro_bruno_miranda.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_off00004ca8.bin
517f359dbcee77af3d566eddc7888b9a65902ee1d2efcaebbbac546b5c572b0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA8 5020 bytes
font_01_sfnt_off00005dbc.bin
b4fe940f55165487e96303aae24362d5efce74c12bc7527cfb446082d69957a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 10092 bytes
font_02_sfnt_off00008039.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8039 4324 bytes

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