Malicious PDF — malware analysis report

Static analysis result for SHA-256 01aa8387593e8b4f…

MALICIOUS

PDF

45.2 KB Created: 2020-07-31 08:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ba53078b0a3a7701fb41f5bd426b6fd SHA-1: 880c4952d3c383dd451567d38dc0ca4ae1f622cc SHA-256: 01aa8387593e8b4f5f8ac793bd8d6e9b0eadf3d50ea6f33904ff0e66fb01e55f
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a free download resource, redirecting users to malicious infrastructure at 'https://ttraff.ru/pify?keyword=thermax+boiler+manual+pdf'. This technique is often used in phishing campaigns to trick users into visiting malicious sites. The ML classifier strongly indicated maliciousness, and multiple heuristics pointed to the use of redirector links for SEO poisoning.

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=thermax+boiler+manual+pdf In PDF document text
    • http://files.paintballparadisebend.com/uploads/1/3/1/4/131456012/fixujifuwaxep-susoj-xuratoz.pdfIn PDF document text
    • http://files.crewkernebowls.co.uk/uploads/1/3/2/6/132695663/4194364.pdfIn PDF document text
    • http://files.naturalborninsomniac.com/uploads/1/3/2/7/132712315/ganagisel.pdfIn PDF document text
    • http://files.fitoutsqld.com/uploads/1/3/1/1/131164310/giziwed-mafaz.pdfIn PDF document text
    • http://files.lesprihaitimission.com/uploads/1/3/1/4/131406182/3256877.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/1/0441/0051/8040/files/32336746778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/26027800499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/zirafatuvopabuniwudozuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/naravukawekagibep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/lijixivinowubitigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/falamikoziloripuzum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3562/3578/files/dugojexalaxefevobesob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/velewulekok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/27843791854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9332/7008/files/74238249241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/terajujojefinobobosunuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/19155065161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.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_off00007290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7290 5064 bytes
SHA-256: 3a3e979978a42712d80c4b61f6176317fdd57bb9224a646c6852b589216a9511
font_01_sfnt_off0000838d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838D 10492 bytes
SHA-256: 155c59098eb56973a73a0651d31020db9ddd7510eec04ea359ab16ea91abd4b8

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