Malicious PDF — malware analysis report

Static analysis result for SHA-256 86dde37af7b2423f…

MALICIOUS

PDF

36.9 KB Created: 2020-06-12 00:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd82eb8560c0353a44d27572520b198c SHA-1: a80c9c7ab3f11eecb095542bad2e8854d603b079 SHA-256: 86dde37af7b2423fa0e109139d63bb24726e72fa43dff3506fdf719fd945103e
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to similarly structured URLs on different domains. This pattern is indicative of a link farm or SEO spam campaign, designed to manipulate search engine rankings or direct users to potentially malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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://tortugavacations.voyagerwebsites.com/uploads/1/3/0/3/130313098/130313098.html#opendns+guide+remove
    • http://aoc-pco.com/uploads/1/3/0/7/130776222/lezutisujasogodesik.pdf
    • http://dartmouthmountaineering.org/uploads/1/3/1/4/131411341/xikepifujokilovedimo.pdf
    • http://aryaninvestmentandhousing.com/uploads/1/3/0/4/130483118/3290250.pdf
    • http://privatelabelwaterstore.com/uploads/1/3/0/4/130477541/kurigunumosorudumum.pdf
    • http://alexmooneyjones.com/uploads/1/3/0/2/130291662/zegupetokepef_vabojeza_ronezifisuk.pdf
    • http://babyandthebeasts.com/uploads/1/3/1/4/131453684/betufomalunufozojane.pdf
    • http://duanecottrell.com/uploads/1/3/0/3/130313169/tamojutotolojitu.pdf
    • http://freeflowenvironmentalltd.com/uploads/1/3/1/4/131483167/dibituw.pdf
    • http://pizzazzamobile.com/uploads/1/3/1/8/131857756/efa559b308e0c.pdf
    • https://punamera.files.wordpress.com/2020/06/rikesokikufadem.pdf
    • https://favogevi.files.wordpress.com/2020/06/binebiwuzora.pdf
    • https://pufikono.files.wordpress.com/2020/06/terevo.pdf
    • https://vasezidavub.files.wordpress.com/2020/06/60493174398.pdf
    • https://xenavosodaza.files.wordpress.com/2020/06/nuwexepanepafijokaluj.pdf
    • https://dataxaju.files.wordpress.com/2020/06/menamudoduxepoja.pdf
    • https://jarulese.files.wordpress.com/2020/06/56334550349.pdf
    • https://duzixegave.files.wordpress.com/2020/06/19869278750.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_off0000646d.bin
1a19ecc3a4a35ab2f7f4d967bca4a87c1d6eaa089c9af7d8382a65b6194c876c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 10448 bytes

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