Malicious PDF — malware analysis report

Static analysis result for SHA-256 74099afe0bd07c66…

MALICIOUS

PDF

46.0 KB Created: 2020-10-07 09:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 21f29b4e4a8a07deab01d4d72a699873 SHA-1: 6964460736cce9acc5561afc618ac9792c6ed3f7 SHA-256: 74099afe0bd07c66bb09258d7fb81a1204394c71e04c60a8711af0779e7c335e
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://ggtraff.ru/pify?keyword=the+gospel+of+the+flying+spaghetti+monster+pdf+download In PDF document text
    • http://feduwofo.reciprocalminds.com/uploads/1/3/1/0/131070420/7329455.pdfIn PDF document text
    • http://lasugoz.auchengraychurchcentre.org/uploads/1/3/2/6/132681293/gowitafugokajib.pdfIn PDF document text
    • http://files.hail-vegan.com/uploads/1/3/1/8/131856815/5461101.pdfIn PDF document text
    • http://files.sunrisestudioseh.com/uploads/1/3/2/3/132303282/5519f85503aa99d.pdfIn PDF document text
    • http://files.karigraydesigns.com/uploads/1/3/1/8/131857031/5803211.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/1/0434/1235/7270/files/isaac_best_devil_room_items.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7204/4187/files/wedowuwoneje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3006/8630/files/scali_bread_french_toast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/organigrama_multinivelorganigrama_empresa_multinivel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/skyrim_the_taste_of_death_dragon_priest_mask.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2474/0252/files/39008674244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0693/8266/files/twin_z_pillow_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9576/2106/files/61962041295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d132146f-468b-4452-886f-a2a5bc1721c9/95416956175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7946791-8286-4113-991d-9f0c88f630e1/rebuzilafowarelokelazub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3e19f3-6ca4-4e21-9c13-9c441c7a5684/59475391853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86d07471-3f05-4bc0-adaa-08400cdfb527/moler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74fe54fc-27f0-4934-a6e0-25d1e36ecd36/6969318676.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_off00007484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7484 5600 bytes
SHA-256: 0f227152c02f1ead361ad02096b76abb36df80e4dc2b46711f0a31ea9494dac3
font_01_sfnt_off00008784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8784 10128 bytes
SHA-256: df259948ecc6e7a47f959ca6cac0d02c57fcee130fcb49c9d09e9df507563b5d

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