Malicious PDF — malware analysis report

Static analysis result for SHA-256 12667fb84314b2d1…

MALICIOUS

PDF

39.9 KB Created: 2020-10-15 14:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2c1ae5026f1a740b47d4ed54172bdd29 SHA-1: 501f305bb62277bb951ba753cf5fabb048d350d6 SHA-256: 12667fb84314b2d1abbee68e661b019df56a8bc4384327f6def348f022f1204b
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://gettraff.ru/123?keyword=key+character+map+android In PDF document text
    • https://site-1038535.mozfiles.com/files/1038535/pogupexatir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f8785398530e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f88236f483f5.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/1140105.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/vovofofaverun_sawivurovoj_nifawubazox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/842acbca-38b3-43be-b248-778da335405c/73624539179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcad098b-7bb2-4f2e-93a6-ac0a65ce95e9/nuwuludimosabafubefika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09e0b75-4d1d-4e32-9380-88628bbc3b2d/rukivuguvuxub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/880a1fa8-2e7f-4c74-a829-dd43875633e1/fexukeziwuruviteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f7b901e-57eb-4da1-90bc-cadc13724a34/fovop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/mupovajiminakekal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2980/6242/files/nuwazilixodokepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3751ac3-14df-4f86-865f-4bd2b4b1dd6c/xetupepudofapozomuparedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63f2f2cc-819d-4b6d-afa5-bb422ecd9327/gezemenik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d977484-fe06-4f13-9acc-9719bd67f94d/91542767994.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6017 5176 bytes
SHA-256: c59a6f5eed573afc0fefa683d358d41171981c4449d666ace6d78bbfe7e406f3
font_01_sfnt_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 9748 bytes
SHA-256: 9b439056705d7fdaba53625402908dba597b69563a835e378180aca45cd14422

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