Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5392940527be46…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 09:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35945fddf7907346282e888549c2a23f SHA-1: 761f4f39b9fa87fcf0171e63a88ee52b730a1031 SHA-256: 5e5392940527be4652360c13646b2ab47ab9c896e1f99acef06ac81e50ca1d58
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for phishing or malware distribution. The document body, though heavily obfuscated, contains text suggesting it is a 'worksheet', likely a lure to encourage clicks. The presence of numerous external links, many pointing to Shopify domains hosting PDFs, further supports a link farm or SEO manipulation tactic to distribute malicious 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.cc/pify?keyword=determiners+worksheet+for+class+9 In PDF document text
    • http://getota.cameliascandles.com/uploads/1/3/2/7/132740900/wokajukusax_muwotukafaku_movumenuw.pdfIn PDF document text
    • http://files.isakpronepal.org/uploads/1/3/0/7/130738850/jenusaxofixapu-banole-wepene-xofewafijut.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/1/0435/1541/2632/files/64467419914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/1564277312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/komajimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/wolitilafemivudoluzepipul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6743/9264/files/kekiruzixowofopepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7983/4531/files/bhagavatam_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/nalajotikiwawuzevumuloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/audacity_for_android_mobile.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
🗂 Part of campaign: freereinequine.ca 5 samples

Related samples 3

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_off00006b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B23 5432 bytes
SHA-256: e2ed2d0d03766714c5f62d3d89f9c707e9ca62f0a9fb3c5d042995cddf65a285
font_01_sfnt_off00007d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D83 10192 bytes
SHA-256: e8682180dd21f965203569666758888608ec14f2bdf9646fc4d694c595f6bb2d

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