Malicious PDF — malware analysis report

Static analysis result for SHA-256 6903843629d75b0f…

MALICIOUS

PDF

36.7 KB Created: 2020-08-06 13:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23112f889a2cb31574f657480148832d SHA-1: 1bf714283e4cb38e6cc28e0dfa11ddc08cbb4bb6 SHA-256: 6903843629d75b0f7f6091bd9d22d2e6671b96e42d0c187eb480daddc9b5f90b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate downloads for textbooks, but they redirect to malicious infrastructure. Specifically, the link 'https://ttraff.com/pify?keyword=technical+drawing+textbook+pdf' is identified as a malicious redirector. This indicates a phishing or scam attempt to lure users to malicious sites under the guise of providing free educational materials.

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=technical+drawing+textbook+pdf In PDF document text
    • http://files.flyhighlittlebunny.shop/uploads/1/3/1/3/131379443/4552009.pdfIn PDF document text
    • http://files.eljewelrydesign.com/uploads/1/3/0/7/130775942/d047c10ef2eb607.pdfIn PDF document text
    • http://files.usedlicense.net/uploads/1/3/1/4/131454172/kuwugisutel_bosawirexuxobod_mupizi.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/1/0434/0521/3847/files/sopebekorevowakabelutavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5838/8383/files/muzitovizipopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/36173141357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/97924172302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/fitgirlsguide_28_day_jumpstart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/97232911589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/41712064651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/dnd_3._5_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/mupukebekeboweruriduxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1678/0956/files/pdf_reduce_file_size_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/colleen_hoover_slammed.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 4

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_off00004f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F77 5552 bytes
SHA-256: c69416ccc647c31b1827fe76e87fdef6d3fe72436119fc3f301d61deffc29b07
font_01_sfnt_off0000626b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626B 10440 bytes
SHA-256: a9f8dad3b7451ab77af770ccfbbc53c77bca45529d7b865989a1cebb24b05fb2

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