Malicious PDF — malware analysis report

Static analysis result for SHA-256 86668ee9cf90a398…

MALICIOUS

PDF

41.0 KB Created: 2020-08-11 21:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 586b0d3b9143664552029712c33693bc SHA-1: dfa3e6e0bea4f8c94f70e96ca658551e098d288f SHA-256: 86668ee9cf90a398c514668ffabf216981521e0dd4a49c78a4cafe21e788c57e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the same malicious redirector URL and benign-looking PDF titles, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malicious redirection attempt.

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.com/pify?keyword=amazing+grace+notes+for+piano+pdf In PDF document text
    • http://debad.annarbortreeservice.net/uploads/1/3/1/6/131606490/nikitepifemu.pdfIn PDF document text
    • http://mepiwuxul.rockheightsvacationrental.com/uploads/1/3/1/0/131071243/nanebixexagus.pdfIn PDF document text
    • http://files.sarahamacker.com/uploads/1/3/1/1/131163667/kijiv.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/1/0430/5167/9898/files/eclipse_mp3_player_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/509208247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/rirefadepuxuxovulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/61650208908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1402/files/25623913636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3436/1508/files/brand_positioning_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/vobopetonaminetux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/joxedeviwunokuniguze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/principles_of_grammar_translation_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/codigo_de_los_caballeros_templarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/ruganeturumaxapubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/99160572293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/66159776113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/rovufurezujidepopewozodu.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 1

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_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 5484 bytes
SHA-256: 04b39dbef4f1370786bb97b12e32ef5a254741de3d3c1e86f553c239c0fca6aa
font_01_sfnt_off0000757a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x757A 9980 bytes
SHA-256: 4b84e77dbcdb581650a71fabfb05d06f59535e9bc516a7414ba40dd5ea4a75a5

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