Malicious PDF — malware analysis report

Static analysis result for SHA-256 480f42b56be7933c…

MALICIOUS

PDF

37.1 KB Created: 2020-10-02 14:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0333c0d4fbd7f402413c14e0a9b744d3 SHA-1: ff70a61298a49c3343ee5ce5c469ef4d961bc317 SHA-256: 480f42b56be7933cb85e485ee3aa501659fd966b1dc7591903a756de8f1cd0fd
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://ttraff.link/pify?keyword=doctor+who+season+4+episode+13+online+free In PDF document text
    • http://nedami.piotrzuylansky.com/uploads/1/3/1/6/131607119/notedoruf_weguribukefe.pdfIn PDF document text
    • http://files.survivehc.com/uploads/1/3/1/8/131871587/zajulodatazal_kogib_supilog_zenowogexo.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/90350156256.pdfIn PDF document text
    • https://site-1039967.mozfiles.com/files/1039967/72212071366.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9befc840-ecbd-4654-acca-654aac2b4f68/semumekosamotis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab87df2-1d5b-4210-b876-3bd34fb7bf6d/98556872326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/551962bb-5e76-4a33-9078-59d4af25ebe6/89691302581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246c5dc2-6ccf-4e93-b8ec-b9417fe1c36c/61748313673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d985bec-9aac-4c6d-a297-11b9a80f1ad6/pevusedebineliloluxasaxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/skyrim_all_enchantments_bat_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4408/9237/files/zikitegoduregiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/entropy_of_ideal_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/gas_laws_test_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/94897784527.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4502 5424 bytes
SHA-256: e3b522b7ec7f4ce26ea37505969fe842037dd4e00e657a90053287579a0f0b7f
font_01_sfnt_off00005787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5787 9904 bytes
SHA-256: 280d573992f820c5e0137317e4c0b8087b3f66c616bba8f0133912f8ad0391df
font_02_sfnt_off0000795b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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