Malicious PDF — malware analysis report

Static analysis result for SHA-256 36bd6200275783fe…

MALICIOUS

PDF

55.2 KB Created: 2020-07-09 12:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31e31b7524ddc2bc6fba574effc7ce11 SHA-1: bae02f810eb8b6c7ae53d1a03584f112c17d1a2d SHA-256: 36bd6200275783fea6935bf5a8b752979fe13803f7fb36995c88debe334a494d
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though obfuscated, contains text related to a 'candida cleanse diet' and references the malicious URLs, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=candida+cleanse+diet+pdf
    • http://files.canalsigling.com/uploads/1/3/1/3/131383018/8717392.pdf
    • http://files.rawyoganz.com/uploads/1/3/1/3/131398279/9878205.pdf
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdf
    • http://files.mylocaldog.com/uploads/1/3/2/3/132303151/tevowedupasiv.pdf
    • http://files.mhecblacon.com/uploads/1/3/1/4/131437351/vasak.pdf
    • http://files.guyingram.com/uploads/1/3/2/6/132681596/3295852.pdf
    • http://files.drbgeography.com/uploads/1/3/1/4/131453735/rasomixotes.pdf
    • http://files.thenauticalartsworkshop.com/uploads/1/3/1/6/131606035/bikebawifutir.pdf
    • http://files.emmanovella.co.uk/uploads/1/3/1/4/131454501/2921136.pdf
    • http://files.jolitabalta.com/uploads/1/3/1/4/131408353/kigirigabipiximatuz.pdf
    • http://files.groundupinspection.com/uploads/1/3/0/9/130969300/menapivumukis.pdf
    • http://files.iron-horse-adventures.com/uploads/1/3/1/1/131163635/6c5c957d4.pdf
    • https://funererole.files.wordpress.com/2020/06/82380173048.pdf
    • https://diluguniwora.files.wordpress.com/2020/06/1408407309.pdf
    • https://doraxurewaz.files.wordpress.com/2020/06/wanozovufemim.pdf
    • https://gitelaxopa.files.wordpress.com/2020/07/89144984598.pdf
    • https://vikezepe379027054.files.wordpress.com/2020/07/vuverevugofowu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/refitapobofubogiwimubik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87913440599.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.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_off00009bf2.bin
f8007ee3415ae6e8761f0366bd412e4686860d744a1132561a9b636fee8a588d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF2 4756 bytes
font_01_sfnt_off0000ac26.bin
6b9b25f741b145cfb5076120be1db7aa8f5ebaa84b13da9e1de395bd7ec8e291		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC26 10492 bytes

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