Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb23a1562c4d6d4c…

MALICIOUS

PDF

44.3 KB Created: 2020-04-02 18:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a064132380b0331384101bfe17163211 SHA-1: f81cff054245d5d0f760a11b6ed9fbe2e4a83203 SHA-256: bb23a1562c4d6d4cea7b662acaec800c44656b8caac1d03fb5adff020dbb3a13
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains URLs that are part of this link farm, suggesting a lure to external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://activatetestsite.com/uploads/1/3/0/2/130272083/130272083.html#analisis+foda+de+una+boutique
    • http://equixitqzine.com/uploads/1/3/1/3/131384688/7374dbffd291e45.pdf
    • http://johnnybwildlife.com/uploads/1/3/0/6/130604419/4033466.pdf
    • http://myhealthandwellnesscoaching.com/uploads/1/3/0/7/130740165/zonimet-vefijim-wujanasa.pdf
    • http://milesforautismrun.com/uploads/1/3/0/7/130740323/kagukup-zutumoxaxivi.pdf
    • http://koromatailormade.shop/uploads/1/3/0/4/130476821/7889605.pdf
    • http://catmcginty.com/uploads/1/3/0/2/130288549/6279024.pdf
    • http://jolvworld.com/uploads/1/3/0/7/130739456/juwofumin.pdf
    • http://noahguystaffing.com/uploads/1/3/0/8/130874261/senawifizevogu.pdf
    • http://skinandbodyklinicshop.com/uploads/1/3/0/7/130739201/821274.pdf
    • http://a3sgestion.ch/uploads/1/3/0/4/130475909/4543925.pdf
    • http://adieapriyadi.net/uploads/1/3/0/5/130539672/sirakidabexopop.pdf
    • http://steamapaloozaccsd.org/uploads/1/3/0/7/130775572/xabun.pdf
    • http://wracfortwilliam.com/uploads/1/3/1/0/131070559/9204089.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000800f.bin
3990f983bbbfd3423eed5ab9ec1ceed5f3a70e3554eb34529a4a78b123fb56dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x800F 9532 bytes

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