Malicious PDF — malware analysis report

Static analysis result for SHA-256 3901279167df155c…

MALICIOUS

PDF

35.9 KB Created: 2020-10-09 13:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 20812a9b01c64c5b6f0e31611809647e SHA-1: f21814f87542438cede6a6c58ad5584cac06420c SHA-256: 3901279167df155ccefd54807ab8da54548ac04c8b2858d84e2ebc8668584bdd
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/strik?keyword=shelby+intermediate+school+classlink In PDF document text
    • http://files.psychicartspiritportraits.com/uploads/1/3/1/4/131408738/9476d3997034b.pdfIn PDF document text
    • http://files.eaglecresttheatre.com/uploads/1/3/1/3/131383514/lasaru.pdfIn PDF document text
    • http://files.ethiopiaopals.com/uploads/1/3/0/7/130774981/sirezedu.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/ce39efcc-bc96-436c-9d8c-439d7bcaba30/1187168795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c9c56ea-5059-4a81-8907-914e905f553f/sazufumopekururefezudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a9b6b1-ea4f-42dc-9537-9dfbeffc814a/vajisebisawofub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30744034-4ef4-4596-93f8-47fcf9e93258/26100951787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/the_millionaire_real_estate_agent_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/there_is_a_fountain_selah_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6649/7960/files/wumufasanuzenuvamuzebiwik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6974/1983/files/88129430153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/8803/2159/files/6934712348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/2336170220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/sakoveferobaziwukirokul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2682/7432/files/arbonne_protein_recipes.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 2

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_off00004d52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D52 5588 bytes
SHA-256: f8c5b63add63bd941d90e846b0fb60fd18980a4226babe3509915f3defec20d6
font_01_sfnt_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 10052 bytes
SHA-256: 63ccee1e1e338d1212947795b22aa9933e4aceccd63d2c307d4233df7963f05a

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