Malicious PDF — malware analysis report

Static analysis result for SHA-256 c863fffd1daa45fb…

MALICIOUS

PDF

64.2 KB Created: 2020-08-09 07:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8339b6d2a2d96d058916c273cfaaf97f SHA-1: 728b688692eceb1cfcd4ff731161b7beae95beeb SHA-256: c863fffd1daa45fb242d895903d3f5e0ee933ce54df052a98c070d8eca3de1fc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

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.cc/pify?keyword=alimentacion+saludable+y+actividad+fisica+pdf In PDF document text
    • http://files.zatoluxury.com/uploads/1/3/1/3/131398335/sudasidop.pdfIn PDF document text
    • http://files.burchfieldhomestead.com/uploads/1/3/1/3/131398250/8b0b4826b2763.pdfIn PDF document text
    • http://files.silverpalmspta.com/uploads/1/3/1/0/131070212/7b0de46.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/1/0431/1177/6416/files/femosivawagenejurina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/pretest_biochemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/40141689541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/legato_carpet_tile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2055/4138/files/drake_all_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/79128697809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/ligitopusesixiguxapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/adda247_general_awareness_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/65th_bpsc_question_paper_set_a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/jebuwejovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/hannah_montana_season_4_episode_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/2125652292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/84954729987.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 6

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_off0000b9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EE 5496 bytes
SHA-256: 8050ab97d439a3ca18f4c0fbe881926734c5c6f37e41636371e062f6b4fef165
font_01_sfnt_off0000cc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC98 11348 bytes
SHA-256: 17dd3e0674542eacbba5863d8fad5cd18a3eed92aaea9ecd55f77e0ce220ebcf

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