Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfa53f32740de99…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 16:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c50087e15b21590ecacae418d93b9ed9 SHA-1: 7c70750c27dc5be9146f41afcf0a16cef423e715 SHA-256: 7bfa53f32740de99adf6b34b6112bc1df3bea62e593f642dfb22c9c438af4aa5
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF contains numerous links, many pointing to what appears to be a link farm designed to redirect users. The document also contains lures suggesting the user install a browser extension or copy/paste commands, indicating a social engineering attempt to facilitate malware execution. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links further supports a malicious intent, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=chrome++selenium+python+filename In PDF document text
    • http://files.lgbtqdemsmoco.org/uploads/1/3/1/0/131070313/lodesijijin.pdfIn PDF document text
    • http://donilad.lovesmallbiz.com/uploads/1/3/0/9/130969551/vojevolonib.pdfIn PDF document text
    • http://xiviwapun.travelsofteens.com/uploads/1/3/1/3/131379326/b7decf0f86.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/1/0427/9785/8972/files/project_scope_statement_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3734/9272/files/geauxbiz_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/54453432973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/verave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/effective_learning_strategies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/zosetufemubujuforemudemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/shanghai_subway_map_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/7122/1410/files/errorless_physics_file_download.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 7

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_off0000667c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667C 5148 bytes
SHA-256: 633d04401b3501c7421025b2fdd193b4fcc927ee1de458548221c59a53a476b9
font_01_sfnt_off000077df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DF 10192 bytes
SHA-256: 9ba647f3c0c02f2666bca36c2498c394461f1ba0b1eb82edc32cb25e21ff9e85

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