Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4323997d7bda89a…

MALICIOUS

PDF

34.9 KB Created: 2020-08-14 05:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 921e48743fb1e4d27951c8fdae1c8f35 SHA-1: e69bd308fbfcdf23dfeb2deb1b6b60a14d1b17e6 SHA-256: e4323997d7bda89adb5df66443450cb63ad6ade13a3ad478bf01222a03865843
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=affirmative+negative+interrogative+pdf'. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external malicious sites.

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=affirmative+negative+interrogative+pdf In PDF document text
    • http://faturop.trevonjakaar.com/uploads/1/3/1/1/131164250/f5018a6e7ac2535.pdfIn PDF document text
    • http://files.theharbourcc.ca/uploads/1/3/1/4/131411762/goxameb.pdfIn PDF document text
    • http://files.mcccil.org/uploads/1/3/1/1/131163601/1375472.pdfIn PDF document text
    • http://jadafe.bachcantatachoir.org/uploads/1/3/1/6/131606262/6821430.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/1/0434/4155/3575/files/bloom_taxonomy_questions_for_reading_comprehension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/porubibagolij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/aging_society_and_the_life_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/linux_coding_style.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/dosazadepubuwox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2666/6904/files/3922024655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5174/0310/files/independent_auditor_s_report_2020_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/tikijisekakibuxawuvol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/kewuwugukuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5337/4874/files/concerning_the_spiritual_in_art_kandinsky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/29499135905.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_off00004c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C67 5200 bytes
SHA-256: 9431ae620da82929874f355dafa30bf8df792971ecdac77205865e776a0767fe
font_01_sfnt_off00005dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 9624 bytes
SHA-256: 5c85e7af9d42b8df5bd4ef81185e27f7b6465f100df73c4ca241de96f3ca7341

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