Malicious PDF — malware analysis report

Static analysis result for SHA-256 609295e5faad6829…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 04:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f7d461acf7efcf4de97d13bd0df6360 SHA-1: 774e657760c319d928b68e0f3d12a5e1d1914bf1 SHA-256: 609295e5faad6829d186049b87a1c72414e3ea7f514f4d4af4deac93a60ccfff
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector infrastructure designed for SEO spam and phishing. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, masquerading as an answer key. This suggests a social engineering attack aimed at directing users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tallentex+answer+key+2020+pdf In PDF document text
    • http://files.pleasantlyplucky.com/uploads/1/3/1/0/131071157/xuvinowol.pdfIn PDF document text
    • http://files.vegantogosxm.com/uploads/1/3/1/4/131454352/sijomebalijones.pdfIn PDF document text
    • http://files.ouhsdra.org/uploads/1/3/0/8/130814078/6513122.pdfIn PDF document text
    • http://files.greeceneedslove.com/uploads/1/3/1/4/131407051/fewixogajuwi.pdfIn PDF document text
    • http://nugekin.sfrachristmastrees.co.uk/uploads/1/3/1/6/131606260/bibemizisasokumadara.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/1/0428/9835/8432/files/japoxotoruzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/factorio_blue_circuit_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3141/files/tutatuninav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1809/9615/files/vutanunazamoriwomokuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1623/1840/files/autoclave_working_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/mozigaponofuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/93834905728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/fimoxemimefuwipaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5583/9392/files/510544291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/81765030704.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: ouhsdra.org 3 samples

Related samples 6

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_off00006a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5584 bytes
SHA-256: bc779febaf74b328a7577386041814545f694bdb83a3a997798780f8617eef85
font_01_sfnt_off00007d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D31 10136 bytes
SHA-256: fde1ef43d387f8f4ce02e5929a2b6f3f9babd31300f131b8ce53fe2e11acfd8c

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