Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ffe114b7623057…

MALICIOUS

PDF

76.8 KB Created: 2020-07-28 22:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 554bb56ceec9170a05a46ea7cc55da66 SHA-1: 243ccba0d53a6322f27bedcc46df88f619bd6612 SHA-256: 94ffe114b762305728a2cd84fb7cf479b9468149d6817a1cef93a35e3d7f1b6a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of the redirector link indicates an attempt to lure the user to a malicious site, likely for further exploitation or phishing.

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.com/pify?keyword=diagnosis+bronkitis+pdf
    • http://files.stcharlespilgrimages.com/uploads/1/3/1/4/131453436/bewinosivuzeni.pdf
    • http://files.kentmindfulnesscentre.org/uploads/1/3/1/6/131607363/zewejurutevagemewe.pdf
    • http://files.posyplease.com/uploads/1/3/1/8/131856706/5028d07.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/60577192939.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4284/files/xadiwatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/28961721546.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/81914917401.pdf
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/73954534083.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/11112571739.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/vomawubokixodunegozojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/xejifo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/56294589681.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_off0000d186.bin
92df8edcd8f5d1a2f620272e897450e8976a060b6c5d69c8de3097e34f494641		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD186 5052 bytes
font_01_sfnt_off0000e2b7.bin
ff41b440f6e62616ac4d67e16dc341bdb0b7969040c8cc03456049f3e20c3667		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B7 14432 bytes
font_02_sfnt_off00010fbe.bin
c683828d5bb05f4876305e7335b2e7deeabf56270d33e6d8add08f3c1a0def57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBE 16488 bytes

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