Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0af600f8abf37f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-06 20:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35ae365139d1e4a00f392413b17bbf1c SHA-1: 6231cf5a065343cdc60b904ecc24d077aad7a7a0 SHA-256: 5b0af600f8abf37f0e5d334c45a74c829834f0f2fac505c1ff5cbb40300fcfdd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, specifically 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This indicates a phishing or scam attempt leveraging SEO tactics to distribute 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.ru/pify?keyword=binary+addition+and+subtraction+multiplication+division+in+pdf In PDF document text
    • http://files.usfproject-benitez.com/uploads/1/3/1/4/131454899/5979240e700ba0.pdfIn PDF document text
    • http://files.immaculataschool.org/uploads/1/3/0/8/130813988/76ab218c2.pdfIn PDF document text
    • http://files.barbaraherzfeld.com/uploads/1/3/1/1/131164067/rerobakudo-ragitafosugu.pdfIn PDF document text
    • http://files.carolalbertmusic.com/uploads/1/3/1/4/131482930/b3165c0fac.pdfIn PDF document text
    • http://files.littlehillfarms.com/uploads/1/3/0/8/130874058/cf63d.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/1/0431/8068/7520/files/famidetoxowodepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1384/files/46997805733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/puwejutoronoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zupupunazapapaneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/r134a_suction_and_discharge_pressure_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mozinetesabelenigifil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/4334832734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/lixofekuredafixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/77239894105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/29297078116.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_off000075b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 5652 bytes
SHA-256: f0110a74d2c29adc0fb01a2beb4bbc4a2120bcc32a015841a1a541f2b746a4cd
font_01_sfnt_off000088e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E0 9764 bytes
SHA-256: 044bc7c26fd360af74286503bfb33e7cd62c0e690f5f30cdbafc78fe89b92881

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