Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e953ea822c6d15…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 02:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5cfbab5228f92e3201e8a7a7725747f6 SHA-1: 6074bdc9efd569f23a9642c1e6f6de19e19d8722 SHA-256: 29e953ea822c6d15bb7c84d484c04ea330b09e5b93c81607bbe4b432b247c3e1
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.cc/pify?keyword=ssars+24+compilation+report+example In PDF document text
    • http://files.mwvhc-nh.org/uploads/1/3/2/6/132695492/a75363f.pdfIn PDF document text
    • http://files.ceradwen.com/uploads/1/3/1/3/131398093/7255563.pdfIn PDF document text
    • http://kobotolu.internationaleconomicsabroad.com/uploads/1/3/0/8/130874254/8749184.pdfIn PDF document text
    • http://zebixozo.questinfosolutions.com/uploads/1/3/2/8/132814930/0058ebfe.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/1/0434/9424/4516/files/xejizopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/biology_book_holt_mcdougal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/vizodaturozuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/32197101326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4756/7010/files/smoke_on_the_water_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/13387201389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/61387083102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/authentication_vs_authorization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/kidozutitepebijaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4211/8555/files/10_commandments_niv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/razinaxefawavi.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_off000060ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AE 5472 bytes
SHA-256: 49b17275fd1644d70c1eda8d8a7e8cfd69cd415e30ac0ea860c34480e67ae380
font_01_sfnt_off0000732c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 10304 bytes
SHA-256: c0ef9e1f5748fd7716a9d14681110feed9ff6874f91b5f63cbcc7393908fa92f

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