Malicious PDF — malware analysis report

Static analysis result for SHA-256 022dca83ccc9d7ab…

MALICIOUS

PDF

38.5 KB Created: 2020-08-06 18:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9422e68f6495f670fe9cb84fb19fb80 SHA-1: e74b03849f7fb399200f17f47523ad1553cb4515 SHA-256: 022dca83ccc9d7ab5322626655f44f9f9e9edc069e7b8da053cbba34049e6715
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for academic 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=movimiento+uniformemente+acelerado+formulas+pdf In PDF document text
    • http://files.phoenixvillexc.com/uploads/1/3/1/4/131453132/dazanixafeb-wolawafomil-fuzigirobiruvi-masotoxo.pdfIn PDF document text
    • http://files.nalinikrishnankutty.com/uploads/1/3/2/7/132740204/bd650f3ea617.pdfIn PDF document text
    • http://files.zpcreatewithnature.com/uploads/1/3/0/8/130873728/fisazipekewo-ranimawarujesen.pdfIn PDF document text
    • http://files.hooktownholidays.org/uploads/1/3/0/8/130814467/rosinowowiga-romipogi-wamati.pdfIn PDF document text
    • http://files.margatedm.co.uk/uploads/1/3/1/3/131398145/0eb9f7d75cd609.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/1/0435/7623/0046/files/2001_yamaha_v_star_650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/54549166520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/vigaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/kuboraxojamomuxadel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/41293000945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6580/7772/files/roman_catholicism_loraine_boettner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/zadejixidewaluxagide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/84088541112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/air_pollution_control_a_design_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/sojilas.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 6

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_off00005342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5342 5368 bytes
SHA-256: 30af1888f281fad083eafe8958eade43d982cacf703df576716ff4b547b5d0d3
font_01_sfnt_off00006580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 11676 bytes
SHA-256: 0c0e2533cd870c11188321f749ea11b890d2d1895bd330b9270e6d542b2d2452

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