Malicious PDF — malware analysis report

Static analysis result for SHA-256 017569625b153889…

MALICIOUS

PDF

40.8 KB Created: 2020-08-13 01:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9dc82b4bbad174f76ee537baf3785e5d SHA-1: 71553a7f1435ea160487ab2e651f2d186141b0e7 SHA-256: 017569625b1538897a1c7433bdb6b94ddc149f1f93701269e05dbc4602ec246b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one disguised as a helpful tool that redirects to a known malicious URL. This suggests a phishing or scam attempt designed to lead users to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.cc/wb?keyword=convert%20google%20form%20to%20fillable%20pdf In PDF document text
    • http://files.runnerschoicewaterloo.com/uploads/1/3/0/8/130874610/938c8d9da17fb.pdfIn PDF document text
    • http://files.anglersforoffshorewind.org/uploads/1/3/0/8/130813301/fupoforavitej-julir.pdfIn PDF document text
    • http://files.laneanimalhosp.com/uploads/1/3/0/7/130776022/mevifesemixuto_lufaw_kawolig_maxudimuve.pdfIn PDF document text
    • http://files.wcfbfoundation.org/uploads/1/3/1/4/131437513/43596.pdfIn PDF document text
    • http://files.myvioletsinbloom.com/uploads/1/3/1/0/131070452/4617112.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/moxudenolaruxorurafugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/pivukegogizaregiluguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/sevojetenara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8276/3679/files/dungeons_and_dragons_5th_edition_character_sheet_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1292/1256/files/66298440644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8548/7525/files/apprendre_le_franais_pour_dbutant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/bracing_cold_formed_steel_structures_a_design_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/56721874570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/tratamento_angina_estavel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/junapitodaropos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/nezaganevenu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F59 5288 bytes
SHA-256: 27207e1e139225f659304859230595787e1f4141d3eb6eb4ba920d605f6a2992
font_01_sfnt_off00007142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 11096 bytes
SHA-256: c9215f7c73abe26b07d2d439a6416dbde5afbddd6b0e18cbc7f877b3d6bf9f11