Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd86bfe73699b1d…

MALICIOUS

PDF

37.5 KB Created: 2020-03-15 01:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1fd8538f87a0e5874b6bddbd6aacf19e SHA-1: bf62953c116ad88890c919802d6fa755f36a9f48 SHA-256: 0bd86bfe73699b1d4f07efcc1dc206e5403535cd9e8fde6c86fe0969771b3d57
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ML classifier strongly indicated maliciousness, and the presence of numerous external URLs supports this assessment. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.entreprovestorsinc.com/uploads/1/3/0/9/130969506/130969506.html#island+lake+lengby+mn+fishing+report
    • http://sejasurpreendente.com/uploads/1/3/0/7/130775429/2796454.pdf
    • http://www.spatini.net/uploads/1/3/0/8/130814774/b3fd13db4.pdf
    • http://serendipitousdesigns.net/uploads/1/3/0/6/130604006/429724.pdf
    • http://themeatballguy.com/uploads/1/3/0/2/130270991/wunegizifijurez-suwebanu.pdf
    • http://jialinzhang.com/uploads/1/3/0/4/130477252/kagamunitazofi.pdf
    • http://www.thinkingspot.com.au/uploads/1/3/0/2/130287995/sutakimomo_podavuwokufe_gusigasaga_vilewo.pdf
    • http://www.shogiforum.net/uploads/1/3/0/5/130539427/xugolufurevo_lakonidozuta_vawaxeme.pdf
    • http://ps163taskforce.org/uploads/1/3/0/6/130639107/0931dd.pdf
    • http://thetotalbasketcase.com/uploads/1/3/0/7/130738984/gikexisizodu-delak-gijidiwireto-pakiredumogadij.pdf
    • http://jonathanhepfer.com/uploads/1/3/0/3/130323750/5ff87be8b48387b.pdf
    • http://moodle.homeoftheshamrocks.org/uploads/1/3/0/6/130639578/zelejojifinaxakat.pdf
    • http://www.omgpineapples.net/uploads/1/3/0/5/130538841/segukewedamukiz_gorupetewivuxoj.pdf
    • http://xcelon.net/uploads/1/3/0/8/130814127/4b2a97.pdf
    • http://trumpthoughts.com/uploads/1/3/0/6/130620909/foriwezam_lawazexo.pdf
    • http://www.festijnsack.com/uploads/1/3/0/8/130874285/6755243.pdf
    • http://alanier2.com/uploads/1/3/0/3/130313755/nixububikawobire.pdf
    • http://www.jaysgourmet2go.com/uploads/1/3/0/5/130541402/1851343.pdf
    • http://bbpsports.net/uploads/1/3/0/2/130289774/zuzenevazetezubawu.pdf
    • http://suntipps.com/uploads/1/3/0/6/130604467/2223790.pdf
    • http://latecritic.com/uploads/1/3/0/5/130588461/7983766.pdf
    • http://captain-teapot.com/uploads/1/3/0/5/130588668/kesedin-jopaxeg-gitugafutugab-bawax.pdf
    • http://www.theclubhousepeoria.com/uploads/1/3/0/8/130874396/zijidub_sukutaveb_zowug.pdf
    • http://jorgeluislinares.com/uploads/1/3/0/6/130604027/4491155.pdf
    • http://cwmbranosteopath.co.uk/uploads/1/3/0/2/130274032/a4b2f268.pdf
    • http://nashlah.com/uploads/1/3/0/8/130814345/8feb7e8cce.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_off000066c0.bin
5831cabec6890077055be9adb28b888ef58f39f3bba14e149963978197aafa45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 8244 bytes

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