Malicious PDF — malware analysis report

Static analysis result for SHA-256 808830fdf8016f51…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 11:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7203cfefe6b6f9dad6e9079aa7fbe72c SHA-1: 690d67b7701e46e603c314a430ee35bad2239fde SHA-256: 808830fdf8016f511c51b2f39c10577472a8effd849ad8b3cfeb69ea60581fc5
194 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary redirector URL is https://ttraff.ru/pify?keyword=idioms+worksheets+for+grade+5, which is presented as a lure for educational content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit users through deceptive content, likely leading to a phishing or malware download 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.ru/pify?keyword=idioms+worksheets+for+grade+5 In PDF document text
    • http://files.chaku.com/uploads/1/3/1/6/131606046/6223546.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/1/0432/6067/4198/files/anomia_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/9823315232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/kuvewutiradudugajuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/jufiwabumib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5395/4725/files/vegipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/atoms_elements_and_the_periodic_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/pradeep_biology_class_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/jizavojejugejisotinupof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7734/files/nijedazavizop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4162/6011/files/24523255131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/piporejikekewunebuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/78834091201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/regrouper_fichier_pdf_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/zesevenipiwegasabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0336/0926/files/dusexojanatolix.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 1

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_off0000608f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 5504 bytes
SHA-256: 32177f16f2c3d06e9503f460fc37150a3a7600fad36778fc34e2e011e8d085c7
font_01_sfnt_off00007340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7340 10008 bytes
SHA-256: 41ce41df1e6cd1710a73c7d10c8b2afa1b385190eb746a4886287f55d1654207

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