Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80f3de83eecda7f…

MALICIOUS

PDF

50.4 KB Created: 2020-08-17 13:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb5c4afe8be6fe41f1156d86cd7d7755 SHA-1: 049e804856f2e091b9a595545c8166f9c906d70e SHA-256: f80f3de83eecda7f67e3627664666671ab84ecb788a26beab962f8d58c1e527e
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a common technique for delivering malicious payloads or phishing pages. The document body, though heavily obfuscated, contains the URL that is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting an attempt to manipulate search engine results or distribute malicious content widely. The ML classifier also strongly indicated maliciousness.

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=battlefield+bad+company+1+game In PDF document text
    • http://files.episcopalchurchonedisto.org/uploads/1/3/0/7/130739895/julusetiliwejo-nevadutijumud-niwikulobefeni-zupebewunesir.pdfIn PDF document text
    • http://files.biffandbaba.com/uploads/1/3/2/6/132696465/8ed6428fbdd6b2.pdfIn PDF document text
    • http://rorinug.jfkscience.de/uploads/1/3/1/6/131606490/dizoxa_norevefexijuno.pdfIn PDF document text
    • http://files.paulkruegermusic.com/uploads/1/3/1/3/131380759/gujujanuwakavo-finurorix-zuviwusixexadom.pdfIn PDF document text
    • http://files.awuahlab.com/uploads/1/3/1/4/131407492/tazatoxomuni_resefit_sesebumuwodade_zemetaxis.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/1/0427/9782/6207/files/baixar_acrobat_reader_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/19362167972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/27616688549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3062/files/astro_del_ciel_spartito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/88488684529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/xusosif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/44529427342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/43238963461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/defisobovofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/19212238932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/31379170009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5141/7751/files/guided_math_first_grade.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_off000086a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A4 5544 bytes
SHA-256: 002d3c32b70a2373f6e02fbfffd16d83865c9c965c9b647363678b9937f087e1
font_01_sfnt_off0000997a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997A 10340 bytes
SHA-256: d97e43a0085c40f413578a198c62dd5d5867c28a7435b0407f785682353de20c

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