Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaae78d9c207cdff…

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 19:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78c85ca7f147be7fd551ad70e80dc8fe SHA-1: 0e9bdc086458eda823a139940db709cffd7d3404 SHA-256: eaae78d9c207cdff187eb9ff731f8b019e2652cc6eee483149b2546449e536ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to 'ap psychology unit 4 test pdf'. The primary IOC is the redirector URL, which is part of a larger link farm hosted on Shopify. No scripts were extracted, limiting the analysis of further payload delivery.

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=ap+psychology+unit+4+test+pdf In PDF document text
    • http://files.thistlethorn.com/uploads/1/3/1/1/131164351/xuwonoseb_fujumowotadomu_lidebakipuwoxe.pdfIn PDF document text
    • http://files.sylviezannier.com/uploads/1/3/1/4/131483361/jugamafifujiv.pdfIn PDF document text
    • http://files.ennishistory.com/uploads/1/3/0/8/130814601/517838.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/1/0428/5222/1091/files/roxofip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/negebubajegudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/madamizixunemorapukaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/vimufopoxoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/nerapujiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/11714853984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/lidivibogidamuxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/nivexekasulerolunilabod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/zapiburavanarugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/sijizukojaraxiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A8 5172 bytes
SHA-256: b1db8749fae105621799590f4e6608580f12de8a9a3d976cd3e040208410cbfc
font_01_sfnt_off00007945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7945 7624 bytes
SHA-256: 5bb63c81bc40b775f5132179ac89f41ccf18ec4c728801e3c7aab351691a2820
font_02_sfnt_off000092fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 9888 bytes
SHA-256: e0d92b70060ee34ff6e922a7c11fc07a4792c402b4a13a045a0519f6959cafb5

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