Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8bed4d696c7ccce…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 07:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8387e8512a0e165f7693b733a2529349 SHA-1: 8ecb7f2848f09fcdad144cdd0ef6f8358af32d01 SHA-256: f8bed4d696c7ccceeca311f41d1ed2aa78759b050fe03cbf3547fa33e2f7d624
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cisco+catalyst+3750+datasheet', suggesting a lure to disguise malicious activity as a technical document. The redirector likely leads to further malicious content or exploits.

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=cisco+catalyst+3750+datasheet
    • http://mitosa.accelerateyourteam.com/uploads/1/3/1/4/131454807/28342e82.pdf
    • http://tavubevi.holytrinitylutheranchurchrvc.com/uploads/1/3/2/7/132740764/4924130.pdf
    • http://files.westhawthornuniting.org/uploads/1/3/0/8/130813042/bumubikikivudan.pdf
    • https://cdn.shopify.com/s/files/1/0431/1013/8017/files/76370438810.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/41733010661.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/6489159804.pdf
    • https://cdn.shopify.com/s/files/1/0433/6068/2139/files/24630109222.pdf
    • https://cdn.shopify.com/s/files/1/0447/3107/2666/files/metabolic_acidosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56802730071.pdf
    • https://cdn.shopify.com/s/files/1/0432/4786/1923/files/cinquenta_tons_de_liberdade_completo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/18467987754.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/15570039026.pdf
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/86967179137.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/generic_array_java.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_off00004f41.bin
bfe4a04444fd2196ef4032d96f428c965941eb61d3f27e379da584cf31667933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F41 5448 bytes
font_01_sfnt_off000061ba.bin
d2d10b6b0c668cf26faa9347c7054f8580c7eefa5cb7aecda2a4fba74bd025f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BA 6068 bytes
font_02_sfnt_off0000716b.bin
bdeec3df0de8ac20da1d2f752fd0fda2e8db9564b9889968b0e82356d7f68cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x716B 14940 bytes

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