Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d69dc992d17a05…

MALICIOUS

PDF

46.2 KB Created: 2020-08-15 16:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b62477d4e3a3eda64d03b94e540c00ad SHA-1: f5186b9c728ffa8dad33912e28dd834082bec041 SHA-256: a9d69dc992d17a0588f4362132644c8ed532c2b47d9fa3c4b880eed552f28244
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as free book downloads, to a malicious redirector. The primary malicious URL identified is https://ttraff.com/wb?keyword=hadees%20books%20pdf%20free%20download. The document body text and embedded URLs strongly suggest a lure for users seeking free PDF downloads, leading them to potentially harmful 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.com/wb?keyword=hadees%20books%20pdf%20free%20download
    • http://komipi.reelmemoriesvideo.com/uploads/1/3/1/4/131454165/magut.pdf
    • http://files.votanix.com/uploads/1/3/1/6/131606533/nukakefiteviki.pdf
    • http://files.usafachapters.org/uploads/1/3/0/8/130813783/tetekewuxejopus.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/3479439506.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/modern_elementary_statistics_12th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/75067350066.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/xefonelimadotuzanubakoz.pdf
    • http://files.herb-and-dew.square.site/uploads/1/3/1/8/131871597/5075157.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/certificado_de_origen_mexico_japon.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/49680165591.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/84443167884.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/36858685086.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/daraxetaguxujokiluva.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/85785764467.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_off00005491.bin
d1e91c083f2ed21e93e6095f37b6c19e2b166ab27454c4cbdd25a376a21b961b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5491 5292 bytes
font_01_sfnt_off000066a9.bin
2e546668184b047f24f62c4e5419893a982141a60f0bb53b5761ec1106b61f0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A9 10180 bytes
font_02_sfnt_off000089c1.bin
782434a590ab1763a1ff9353f34a83d6594ce9d0dd23243faa92e1a60627d009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 20540 bytes

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