Malicious PDF — malware analysis report

Static analysis result for SHA-256 a069375796baf09b…

MALICIOUS

PDF

60.4 KB Created: 2020-03-30 01:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a42137eed78140ec3f9b00b021a906ad SHA-1: 0d91ca7114030ac0811cd10ada687c2229c40f31 SHA-256: a069375796baf09ba1238f7f8f880ac1053808e4608d560830e47c748bac6bb0
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains, indicating a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains text related to a book title and embedded URLs. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be directing users to potentially malicious external sites.

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://host37.carmichaelnl.com/uploads/1/3/0/4/130435631/130435631.html#libro+el+abc+de+la+agricultura+organica+jairo+restrepo+pdf
    • http://brettwalter.com/uploads/1/3/0/8/130814591/forarik-gatasonizebe.pdf
    • http://rightmovecolorado.com/uploads/1/3/0/2/130271078/fokulubitera_luluriv.pdf
    • http://gtrans-logistic.com/uploads/1/3/0/6/130620453/9bb060b4.pdf
    • http://livinglifetothemaks.com/uploads/1/3/0/9/130969853/8831875.pdf
    • http://mdfenceanddeck.net/uploads/1/3/0/5/130541208/jizavo.pdf
    • http://xtremeiq.org/uploads/1/3/0/2/130270808/wirowosukunesuxizasu.pdf
    • http://inerfazeone.com/uploads/1/3/0/8/130814432/4092738.pdf
    • http://alvarezorganicfarms.org/uploads/1/3/1/4/131406352/a8a04f5a.pdf
    • http://marshalinehan-dbt.org/uploads/1/3/0/4/130483961/wopagavarexaruwep.pdf
    • http://propertyexcellencemoree.com/uploads/1/3/0/5/130543106/73da8b15.pdf
    • http://krispykleanautospa.com/uploads/1/3/0/7/130738794/6573838.pdf
    • http://darwinleon.com/uploads/1/3/0/6/130639329/ec65c34917268f8.pdf
    • http://lucyspeight.com/uploads/1/3/0/2/130289675/310ec1b649f.pdf
    • http://aimeekena.com/uploads/1/3/0/2/130287502/5876283.pdf
    • http://completemobiletesting.com/uploads/1/3/1/1/131163772/4647015.pdf
    • http://campconcordia.com/uploads/1/3/0/7/130740143/wowisisejixobe.pdf
    • http://wearewnc.com/uploads/1/3/1/4/131437106/20bd0612e2c.pdf
    • http://glazurnik-jamroz.pl/uploads/1/3/0/5/130541402/31289.pdf
    • http://communitygreenkeepers.com/uploads/1/3/0/5/130551051/wakizud.pdf
    • http://indigostaging.com/uploads/1/3/0/6/130603903/3530cefbaaa2e.pdf
    • http://titandebate.com/uploads/1/3/0/5/130551364/3289888.pdf
    • http://passionatedoula.com/uploads/1/3/0/2/130288326/zusuvijefiliduk_wutano_dotesevawezero.pdf
    • http://gcnsconsulting.com/uploads/1/3/0/4/130436196/bugij_jesesadizuri.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_off0000be95.bin
031b6670c5383780187e6172b7237d5d7380bc067f0bf5e1b1dd3cd033546468		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE95 9444 bytes

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