Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b3e845d9514421…

MALICIOUS

PDF

41.9 KB Created: 2020-08-04 19:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec59779af78e5bfe614f16d3c355cbf SHA-1: 3cbd79ed018c8f4bf43e4c66af938fb521390e20 SHA-256: 10b3e845d951442123e2a14de87cab826ea1894f7a557f1388f237b2c634949d
202 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body itself contains the malicious URL, suggesting an attempt to trick the user into clicking it. The ML classifier also strongly indicated maliciousness.

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=base64+image+to+pdf+php In PDF document text
    • http://files.naturaltouchhealing.com/uploads/1/3/1/1/131164202/tuvotekejij-tewirage-lifafavi.pdfIn PDF document text
    • http://files.completewellnesstherapies.com/uploads/1/3/1/3/131378868/fupitabogoxupu.pdfIn PDF document text
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.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/1/0431/0306/0128/files/towarifofaxizufapebatil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2735/6056/files/tuwapepotolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/45325155838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/josibisunekalufimiluzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/wirogalexolutemifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/79917621314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/68725166861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7572/3673/files/unity_wave_shader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/samsung_universal_print_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/power_factor_improvement_using_capacitor_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/70919282001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/aptitude_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/19831454415.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_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 5620 bytes
SHA-256: 665e89fe2f2000fb2e9d3e081d5af0b4329fad759d931188f4749ce4d6bc25f9
font_01_sfnt_off000075fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FC 10732 bytes
SHA-256: b9f4c04f65729205ac36a46f307b489e9e1cd178932d345008b3e22bd2f2e5b7

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