Malicious PDF — malware analysis report

Static analysis result for SHA-256 133b023a455a2554…

MALICIOUS

PDF

233.5 KB Created: 2020-08-26 05:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c16b16ba8bc3ec08b93be81bba342136 SHA-1: 075c9ba8d4a95d4f867db8116c60d7936eeb0bc8 SHA-256: 133b023a455a255419f1d8b93fdb0d53ed8109fdd66b0bc6e3c3ca554e3300b2
134 Risk Score

Malware Insights

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

The PDF contains embedded links and document body text that point to a redirector URL, specifically 'https://ttraff.com/pify?keyword=optician+training+manual+free'. This URL is flagged as a malicious redirector and an SEO lure, suggesting the document is designed to trick users into visiting a potentially malicious site under the guise of a free training manual. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=optician+training+manual+free In PDF document text
    • http://files.aclickawaytraining.com/uploads/1/3/0/7/130740149/d5adb46.pdfIn PDF document text
    • http://files.earthconlandscapesupply.com/uploads/1/3/2/6/132696483/4facbc7f1.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/1/0438/2975/6066/files/funuvotebez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/zifonezodofipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/arterialized_portal_vein_waveform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5432/4117/files/jaxenirirud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/jurnal_atresia_esofagus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/cookiezi_new_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/murofusozawivunexixabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/vonomugesizapuferokowan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/honeywell_pro_5000_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/flannel_sheet_set_queen_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6094/5305/files/stephen_king_the_jaunt.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 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_off00035a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A9D 5184 bytes
SHA-256: 57ffbed95c73c9377dcfad58baf6a8b071f342c353241e636dfe28dfe454e44f
font_01_sfnt_off00036c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36C26 13636 bytes
SHA-256: 6df844002a979581135deb86cf07f926a1d415340e5706843d1e967a2b0e95fd

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