Malicious PDF — malware analysis report

Static analysis result for SHA-256 09716068704b146d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-08 07:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d903d77fee60337a52566f98ea53bab7 SHA-1: 260c03e57fc21c80ef3054d02ae171c002cd54a3 SHA-256: 09716068704b146d784338a899fd11eb0dd94399892fae7289b25fdad2240893
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=le+18+brumaire+de+louis+bonaparte+pdf In PDF document text
    • http://files.principa-book.com/uploads/1/3/0/8/130813095/7923121.pdfIn PDF document text
    • http://files.orangevalleycreations.com/uploads/1/3/1/3/131383510/bujofaketuwomidabej.pdfIn PDF document text
    • http://xebivi.janeandjohnqpublic.com/uploads/1/3/2/8/132814930/e3dab55cfe6a28b.pdfIn PDF document text
    • http://files.galtandmaree.com/uploads/1/3/0/7/130776058/8501963.pdfIn PDF document text
    • http://jupirap.schollyproperties.com/uploads/1/3/1/0/131070476/9749264.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/1/0435/3789/1482/files/chapter_13_class_10_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7697/5768/files/ccna_dumps_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/rezoratujotuworulekopaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/buddhist_monk_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/73859583121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3502/8630/files/abecedario_coreano_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/79046400473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/65462687384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/37236832032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/10993839830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2400/5794/files/nizuloxixerukijenovaso.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_off00006c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C65 5512 bytes
SHA-256: e65b24caf8e3105eb0b08a772ac01373452179986c34d2b90fbfe8f168c36b4b
font_01_sfnt_off00007f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F09 12332 bytes
SHA-256: cdf9236d464eca66d2769f7e526270c593e7d4323eff2f72f9e71b6a4f5c0300

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