Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb296817281c506…

MALICIOUS

PDF

44.1 KB Created: 2020-09-30 20:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b4d25b37a28726b3be7f5b06f7befd12 SHA-1: 660852fe65ec5eadde9e934c704ab5d6a7be4de8 SHA-256: bdb296817281c5064da7443fb4bd71cd722b38f7dce84172436a345abe245ac7
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/strik?keyword=2x72+belt+grinder+plans+pdf In PDF document text
    • http://files.mounthorebccl.info/uploads/1/3/2/7/132741556/zuxugepif.pdfIn PDF document text
    • http://pigez.lavarthomas.com/uploads/1/3/0/9/130968915/93db7e543f0af.pdfIn PDF document text
    • http://ragidab.mrk9inc.org/uploads/1/3/0/7/130738780/9868039.pdfIn PDF document text
    • http://files.fullertonindiansbasketball.com/uploads/1/3/2/6/132681476/zilofujak.pdfIn PDF document text
    • http://zapujax.drawinguntohim.com/uploads/1/3/2/7/132710712/fdce4bfe.pdfIn PDF document text
    • http://gutepobob.webuycribspittsburgh.com/uploads/1/3/2/6/132680813/99ecdaa46b.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/3552f043-a494-43f7-8db0-5ac0084ab56e/fesubon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f431ac-bfb0-4d48-9b53-e91c59ccf130/wurivorujoxijenivemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1952d091-e561-4bf3-a297-b9d6e5bf82c5/38249925168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec789246-a5dd-40c4-a0cd-e3193b75c1de/nipeziginakiwub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5939/2924/files/2942433200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/princeton_review_act_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/dazawosaxizovuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8877/1227/files/carrie_underwood_2020_tour_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/24063980049.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_off00006d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4B 5532 bytes
SHA-256: 418ce6b2c3da207ed0eb732f06910324d946e719ea2ff133db16a4c3e2b98ae0
font_01_sfnt_off0000802e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802E 10248 bytes
SHA-256: 1c4bf5ce1e04eb9c6494a8fcd13514457f36b7479e15e78831cb5c85bdc8916e

Open this report in the interactive analyzer, or submit your own file for analysis.