Malicious PDF — malware analysis report

Static analysis result for SHA-256 7614e0f761f3c0bb…

MALICIOUS

PDF

39.4 KB Created: 2020-08-14 04:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8bb5c49f9ef13baa716f128f131bea7 SHA-1: 0d64295b41a64f54924c9843b42748d3df5ffb7e SHA-256: 7614e0f761f3c0bb592ea1004b624b356905226b816f42fcd9f0cdd2652d0158
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to appear as a search result for a specific textbook, but redirects to a malicious URL. This technique is often used to trick users into downloading malware or visiting phishing sites. The embedded URLs and the ML classifier strongly indicate malicious intent.

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=sullivan+algebra+and+trig+9th+edition+pdf In PDF document text
    • http://files.artculturevs.org/uploads/1/3/0/7/130775727/3763f1d2.pdfIn PDF document text
    • http://files.wbcphoto-art.com/uploads/1/3/1/3/131379456/5cff67188.pdfIn PDF document text
    • http://files.mackaychocolatebouquets.com.au/uploads/1/3/1/6/131636916/lekedona-nemufikibusuka-bodujufopomi-tusisuve.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/1/0429/1375/9395/files/4370719436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7182/files/tenunikusaxoxoliwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/byrsonima_crassifolia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/neoclassicismo_e_romanticismo_letteratura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/fabozega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0242/files/vafurowivamijapagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/75006907830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5748/6753/files/ruby_on_rails_syntax_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/on_the_historicity_of_jesus_carrier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/ligusivusumivem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/28156458303.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 3

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_off000054d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D1 5584 bytes
SHA-256: 2f3ea2bdd5513f4556f3becad3b44ea951c35ccfa5a0e4320a26a3fdc9af4393
font_01_sfnt_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 13104 bytes
SHA-256: 173a75f9229d2e5b8070724febfca21a3758dd79336b8f74c19ea77d6cb3d85b

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