Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad18340fe9d0575…

MALICIOUS

PDF

45.4 KB Created: 2020-03-18 15:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 000fce3cbd0594befd32678e8a0d031b SHA-1: de4458567fd95402da20ccd8107d2aeb85f16f60 SHA-256: 8ad18340fe9d0575b40716cf8da9590847069707e5fb6c618bbac0577888f3fc
94 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of SEO spam or a phishing campaign designed to drive traffic to malicious content. The ML classifier strongly supports the malicious verdict.

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://mychoicemedicalpractice.com/uploads/1/3/0/3/130313005/130313005.html#give+him+an+inch+and+he%27ll+take+a+mile+%D0%BF%D0%B5%D1%80%D0%B5%D0%B2%D0%BE%D0%B4
    • http://indigenousrootscorp.com/uploads/1/3/0/6/130620391/tusiwunif.pdf
    • http://cuestionsocial.com/uploads/1/3/0/5/130588567/salufesi.pdf
    • http://ironport1.tpicorp.com/uploads/1/3/1/0/131070852/saweti-fuguwuse-domexaz.pdf
    • http://www.niedbrass.com/uploads/1/3/0/7/130776877/narosafusozom-gojukajogusojas.pdf
    • http://www.sunpulsesolar.org/uploads/1/3/0/8/130814132/fewema.pdf
    • http://blisstify.com/uploads/1/3/0/3/130323293/b279cc6.pdf
    • http://chazstyles.com/uploads/1/3/0/6/130620222/3314708.pdf
    • http://640stonehouseln.com/uploads/1/3/0/7/130740210/wamopuwotaninurage.pdf
    • http://schayerbuilding.com/uploads/1/3/0/8/130874313/lafinuwavudaj-nufegop-bibivebeniwip.pdf
    • http://dakotaashleymarie.com/uploads/1/3/0/2/130273915/2eb3e69.pdf
    • http://musictheatercareers.com/uploads/1/3/0/4/130483745/9695466.pdf
    • http://yunisquare.com/uploads/1/3/0/7/130739330/rurikax_miborupadot_gavinume.pdf
    • http://oxbowfarmny.com/uploads/1/3/0/7/130775470/fopegofivos_fupazuwapaxufeg_sizufilakebe_batesesofaziwen.pdf
    • http://loveisnothate.net/uploads/1/3/0/4/130489122/kuxerumijivo-gimibagajasoge.pdf
    • http://michaelholt.ca/uploads/1/3/0/7/130740320/fewejexamolal.pdf
    • http://northshoreindustriesinc.com/uploads/1/3/0/2/130272381/3269573.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ab9.bin
81435c762e67265137322372e8f91f29a742e61b23ff4d343e53e60d40817b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 8616 bytes
font_01_sfnt_off00009ba5.bin
e2a609504f31aba74360c8f97aead3d8f97c76e888a653261413c8bef59e3205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA5 2884 bytes

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