Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dbf2b1721de9c2c…

MALICIOUS

PDF

36.2 KB Created: 2020-10-02 15:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ed99f705e95629a6ef44d4567b6de68 SHA-1: bd91321e0f96fb9899b3e36114f86b9ad864619b SHA-256: 0dbf2b1721de9c2c738a4b63337492793c6344c20a385bd0553052de3c4fac52
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.link/pify?keyword=poultney+high+school In PDF document text
    • http://nobepowam.thrivingfamilies.com/uploads/1/3/0/7/130776795/6d7f47bc351a0a.pdfIn PDF document text
    • http://susaf.flywa.com.au/uploads/1/3/0/8/130814292/671e645a4af0091.pdfIn PDF document text
    • http://files.smestheatre.com/uploads/1/3/1/8/131857390/9b28c70.pdfIn PDF document text
    • http://vidunegi.treetopkidstherapy.com/uploads/1/3/2/7/132741136/xaxuvobeso_demijiv_xifadijenonikot_pisijegon.pdfIn PDF document text
    • https://site-1037019.mozfiles.com/files/1037019/45744511558.pdfIn PDF document text
    • https://site-1037835.mozfiles.com/files/1037835/37282152319.pdfIn PDF document text
    • https://site-1036900.mozfiles.com/files/1036900/41728980036.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/69807609292.pdfIn PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/96745939075.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/kepugesulusijux.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/filibavebozisojasez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8910/4548/files/pilijibomokikaxibipuvilel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5038/1724/files/98834041125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1256/7452/files/97355809617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/cosco_scenera_next_manual_espaol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51CF 4860 bytes
SHA-256: 0e5b1ca3da7232e20ad42486e14aceef84a5b797d04525a1e1a286ac0494bf73
font_01_sfnt_off00006269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 9956 bytes
SHA-256: d82bf9d4571d7d9bd4b402196811eb4b032bb58073eb272c3e2de93791dd3eb9

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