Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9697fd4e81e1c44…

MALICIOUS

PDF

40.8 KB Created: 2020-08-02 14:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84871e042610af9c1272635816ed72bc SHA-1: 5764d61fa60fe7b4c522fd0fdcdd6feb78f8614b SHA-256: c9697fd4e81e1c4455b0ae49f27b4558bc17d75df65de075177c7c66102c3a00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains the text 'Intermediate algebra sullivan 2nd edition pdf' and a URL that matches the redirector, suggesting a lure for users seeking academic material. The redirector URL is https://ttraff.cc/pify?keyword=intermediate+algebra+sullivan+2nd+edition+pdf, which likely leads to further malicious content.

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=intermediate+algebra+sullivan+2nd+edition+pdf In PDF document text
    • http://files.nav-gill.com/uploads/1/3/1/0/131069968/b35919c.pdfIn PDF document text
    • http://files.globalafricadiaspora.org/uploads/1/3/1/4/131454219/3710953.pdfIn PDF document text
    • http://files.schmidtenglish.com/uploads/1/3/0/8/130874613/1222738.pdfIn PDF document text
    • http://files.eccevideos.com/uploads/1/3/1/4/131406629/ditapuxisesas_pesixawipe_gubemibefu.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/1/0428/2885/7503/files/nafazepesotutapajov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/96368521916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/25921200743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/ranudanakozetoxitiduwinew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/45715633162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/muvamememeletomub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/lozagazanarid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/jomamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/banone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/94154855799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/pukewuxowanufozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/12448035328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/85679946141.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_off000055da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55DA 5632 bytes
SHA-256: 50e8dc37fe25d161e682ca281a189e9d9e13e1d3e5fbef72c6bc1d2d8bd34345
font_01_sfnt_off000068f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F1 13368 bytes
SHA-256: b13643669b39024a1dc157aec6dd68442ac93b6f3f2992cb32bf8b1fa5e530bc

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