Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fd33b9e236a560…

MALICIOUS

PDF

44.9 KB Created: 2020-07-28 15:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac170702a2eac628a85820de7c8becc5 SHA-1: 24221eca38a00162a3982e7f43f352d7af02085d SHA-256: 68fd33b9e236a560f619dab3e3e561d5c7a95082fe1927116fc62ca153aee734
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for SEO-based lures. The document body, though heavily obfuscated, suggests a theme related to citation styles, likely a pretext to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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=chicago+manual+of+style+citation+footnotes+example In PDF document text
    • http://files.eastworship.org/uploads/1/3/1/3/131381772/wikonipawejon.pdfIn PDF document text
    • http://files.janbyrneceramics.com/uploads/1/3/0/7/130775633/wefudizadigov.pdfIn PDF document text
    • http://files.simplymello.com/uploads/1/3/1/6/131637679/vopeja-jobadena-wixasib-zulugizeranaj.pdfIn PDF document text
    • http://files.widhalmcustomhomes.com/uploads/1/3/1/3/131383934/8f19ef67.pdfIn PDF document text
    • http://files.topographyandink.com/uploads/1/3/2/6/132695569/wiwepijuxa-goxuperul-bowub-bisazikekeseba.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/1/0427/7963/9967/files/17808708878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/vizuzebujipalifekako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7228/9944/files/41140232781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/28869319236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/74384122532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/5753542628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7548/4313/files/68888571910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/nugadovaduler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/paronodanima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/vabipifuvatiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7872/0414/files/90518949840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/59566564588.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_off00007246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7246 5408 bytes
SHA-256: b48837bfea2483bf3276d40505e4f59fd4c3e26778bfc81f9907e516f975219f
font_01_sfnt_off0000849d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849D 9796 bytes
SHA-256: 84f1a76b4f0554808b73a3b0ccb83aa52b7fb89d57ce117aa10b990edb7edee1

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