Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca983c93749fc2d…

MALICIOUS

PDF

42.1 KB Created: 2020-08-11 00:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c0ea6c1c0246f2835b9df25eda2b260 SHA-1: ecaa07af1f7fb1362671c6227431a7242e01cb59 SHA-256: 0ca983c93749fc2d418bbcd00dec61e6f021aa192a6ab1dc0d22fbe1a70ba884
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a likely attempt to lead users to malicious content or phishing pages. The document body, though obfuscated, contains the same lure text as the redirector URL, suggesting a social engineering tactic. The ML classifier strongly flagged this PDF as malicious.

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=mergers+and+acquisitions+case+study+with+solution+pdf In PDF document text
    • http://files.somedaynewfoundlands.com/uploads/1/3/1/0/131070459/6e7b7e33a8316.pdfIn PDF document text
    • http://files.alissaellisphd.com/uploads/1/3/1/4/131452827/844207.pdfIn PDF document text
    • http://files.andrewmichaelart.com/uploads/1/3/1/4/131408529/59fa416c9cccb3.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/1/0429/8512/8090/files/tebuvogifojetunovelifibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/xixobosejofeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/aci_318_11_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/zoxofasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/75284966313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/82881797847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/alter_ego_plus_a1_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/90931845325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5280/1943/files/wumimidoxidetefofegag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/terinegaboludugezijuvar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/oxford_english_dictionary_full_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/vologi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/kutowa.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_off00006387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6387 5740 bytes
SHA-256: ca4214dd9dcc0fc37a1f3492254872dddd47d283c6071b8bda0f836f03cdac4c
font_01_sfnt_off0000772a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 10468 bytes
SHA-256: e67186efd45b512359ce45f72105d8d3546b9a973ab639203c071bb5a1e5ca4b

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