Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41212ce8500ac53…

MALICIOUS

PDF

39.5 KB Created: 2020-10-12 10:27:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 91aaa4ecd5e79ba04e4ead56bd72c26b SHA-1: 438c4c5614e7ab9ad41f3636668590e8598b8606 SHA-256: d41212ce8500ac53a569afc9dabc96942aa6bc1bf2765b7e95837edfccde2960
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://cctraff.ru/pify?keyword=divided+kingdom+bible In PDF document text
    • http://nufuliw.peneloperosecowley.com/uploads/1/3/2/6/132681579/fizuzujedozi-lonen.pdfIn PDF document text
    • http://files.cier-camp.com/uploads/1/3/1/1/131164350/fitixujagerow_xugado_pujomoromu.pdfIn PDF document text
    • http://files.head-to-toe-ministries.com/uploads/1/3/0/7/130776826/4207017.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/1/0433/2689/8344/files/80494779374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0075/8947/files/gupegelutapapodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4729/6924/files/immanuel_baptist_church_colonial_heights_va.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/dr_death_steve_williams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2800/9119/files/dodge_raider_for_sale_ebay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9027/9077/files/booming_blade_divine_strike_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8385/2704/files/20354557123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541bf9c7-1eb1-40c7-a7d1-7a7f0cc667b2/jepivovulusufajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5952b2e3-67f6-496b-9c28-015bc390ea61/vazujekirire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86417bff-4503-4158-aa78-6b078a6c7250/53858838871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5602dd1-5cda-4675-a357-737bd8c68917/30757442965.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_off00005c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C35 4924 bytes
SHA-256: 69dd35e68445262ec42e8c492f66881b63ae36d4568b0a7b8c50676a487072c5
font_01_sfnt_off00006cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF8 10640 bytes
SHA-256: 6dba95835d1511ce4ab0dc319bb2285b4c4ab095e9e26cdd7a3941c7a14a5824

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