Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d8607c199b4072d…

MALICIOUS

PDF

36.9 KB Created: 2020-10-16 04:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 519986627528d7737350a0e7a08b1fa8 SHA-1: fe0169bdd9ef38c64887d4381b5e5ff14caf89f7 SHA-256: 4d8607c199b4072d5196d0d1158a6245caaf9518cc78d7f858b3f6b8a529fca1
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/123?keyword=soroban+abacus+book+pdf In PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/mororuw.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/dubesiguk.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/59e18c2f1d0bf5.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/1f2f042291555f9.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/sosef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_5f88df792eb3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8725e184009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f88f1e5d0158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f88dbba0ce96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f8717b03bdd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f88caadc294e.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/1/0502/2901/8793/files/bujabuzarujekubap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4078/3008/files/melakabubulitipogogonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8153/4102/files/paladin_oaths_5e_redemption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4535/4170/files/scion_tc_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5741/3795/files/california_primary_sample_ballots_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/13362400193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2278/0069/files/1057206445.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_off000052c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52C2 5424 bytes
SHA-256: c7ce8957315321f13dfd2bbc28005af6064d487d107f3e84ea7bd4ae34afaa20
font_01_sfnt_off00006534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 9764 bytes
SHA-256: d924c8f48454390f350ce66f2d5fb807886538f1c3032c554d7a0bd1c937c5b5

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