Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73690116d17509f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 21:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81e9e1b63ee889344be3a84cf0c65dc8 SHA-1: d98ad8f07c431e74f31955acf7a35fca8b97bac5 SHA-256: f73690116d17509f503f45a792f333d6cb6c34a12ffdf1afcec723386d4d97df
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and references to PDF files, suggesting a lure to download further content. The presence of a 'download button' heuristic further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bruce+lipton+libri+pdf In PDF document text
    • http://files.wifie.org.uk/uploads/1/3/0/8/130873944/tazirabavinifiku.pdfIn PDF document text
    • http://files.writersabodeen.com/uploads/1/3/1/3/131383934/mizetuxasopive_jamoraketerodaz.pdfIn PDF document text
    • http://files.greatexpectationsknoxville.com/uploads/1/3/1/6/131637240/558e750e54e2410.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/1/0431/6551/5933/files/59879461848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3543/2859/files/sinotirodatuvikezoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/how_to_set_up_dash_button.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/rulabewurune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/80917204788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/how_to_contribute_to_a_github_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3550/7358/files/zutovutibigijurix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/jafolulure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/61798323273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/73358885036.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 8

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_off00006a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 4948 bytes
SHA-256: b4d9c67a6388e3ca61c6a517ebb8d1f6157738e27b6f42db08dcdf95a66d89a4
font_01_sfnt_off00007b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B18 10188 bytes
SHA-256: 632fe4141958027d1500e00ba0b67d8d49ce74f121cdafcbea065d6fa855b682

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