Malicious PDF — malware analysis report

Static analysis result for SHA-256 5504f11f3d591902…

MALICIOUS

PDF

39.3 KB Created: 2020-08-13 23:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f39638ee924a8058bf0a8b29213964f SHA-1: 24ca271f501d2e1ae86297f423c69b66316a7ef0 SHA-256: 5504f11f3d591902ad7691f61bfea8b1eabc59c1cf58c5094afde3daa0a86876
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'graphing linear equations worksheet algebra 1 answers' and the malicious URL. This suggests a social engineering attempt to trick users into clicking the link under the guise of educational material, leading them to a malicious site.

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=graphing+linear+equations+worksheet+algebra+1+answers In PDF document text
    • http://files.mvmahalo.com/uploads/1/3/1/3/131380292/7fa1c4194d957.pdfIn PDF document text
    • http://files.empachernorthamerica.com/uploads/1/3/1/4/131406434/32790b2f0b440.pdfIn PDF document text
    • http://files.ephphathaministries.com/uploads/1/3/1/6/131637240/gasoxulirikazo.pdfIn PDF document text
    • http://gogenuma.lakehousestudio.us/uploads/1/3/1/4/131453133/4282265.pdfIn PDF document text
    • http://lexano.carlaposenjak.com/uploads/1/3/0/7/130776279/gorutelupekiwese.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/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/41355304999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/wibelokabage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/8582757804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/child_and_adolescent_development_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/tesadezawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/node_js_tutorial_w3schools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/kovofijodunatinesukosud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/dexujivabetafuvifaluxet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1303/5416/files/67537176237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/carbon_sink_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.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_off00005c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C69 5588 bytes
SHA-256: 6132ed78aab72320f3c596bc346bddd0e457c456cf10d89aa8f83215a3df7575
font_01_sfnt_off00006f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F81 9480 bytes
SHA-256: 9f6bb4e64117b3857356c47aea02cb860a824df6269e968af53e175ff7848d47

Open this report in the interactive analyzer, or submit your own file for analysis.