Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4844ab6489add09…

MALICIOUS

PDF

44.1 KB Created: 2020-08-12 07:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46f1cf2fc3f7429609577733bc5a301a SHA-1: ed6e3b8c1c7c0ec0e9768dfa18637e78a78b964b SHA-256: d4844ab6489add092cf3e35cd4efe3bd95d13c57dd35a5ac38c8e1dea2a49d16
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to attract search engine traffic, with one primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The heuristics indicate the PDF is acting as a redirector and a link farm, likely to obscure the final malicious destination.

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=automotive+industry+definition+pdf In PDF document text
    • http://kiwibari.newparanormalinvestigators.com/uploads/1/3/2/6/132683169/a7ee411.pdfIn PDF document text
    • http://sasipe.exclamationservicesusa.com/uploads/1/3/1/1/131164250/wonas_dobuver_babepiruga.pdfIn PDF document text
    • http://magavele.msmontagnon.com/uploads/1/3/1/6/131606289/kajunujaxasej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/jopadusukafavifovoxosuzat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5289/6154/files/dieta_alcalina_recetas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/limarigunefudixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/bofatuwulubitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7592/files/kegetopoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/52215373030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/15757990267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/7850750063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/fuzavuxofiron.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F46 4976 bytes
SHA-256: 278c784acc211a763846d62ac5fd55ed8f9bd833bed14d21b697f0ecaf2b8709
font_01_sfnt_off00007028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7028 10932 bytes
SHA-256: 78877de034100564caeb877a195ba5079ed77cbcd0c24b47f52777fec830753e
font_02_sfnt_off00009578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9578 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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