Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6aa85d7a35bf85e…

MALICIOUS

PDF

40.4 KB Created: 2020-08-07 14:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62d8abd78a12d2fd589caf2928a09d5e SHA-1: 8917c71d7b300c11d212827305301b01848cdc7f SHA-256: d6aa85d7a35bf85e7478a27d46684b86134c01c6e1327b1f8199c4a7f5e4755d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass external link farm, with numerous links pointing to various PDF files hosted on external domains. One of the primary links, 'https://ttraff.ru/pify?keyword=national+building+information+modeling+standard+pdf', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a malicious intent.

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=national+building+information+modeling+standard+pdf In PDF document text
    • http://files.jeffreyvbohlsculpture.com/uploads/1/3/0/7/130775953/4466323.pdfIn PDF document text
    • http://files.paulcyon.me/uploads/1/3/1/4/131407958/zakodobuje_gulubadevaxo_jusan_taxemujit.pdfIn PDF document text
    • http://vowitumen.blogoftheo.com/uploads/1/3/1/1/131163635/62398ec6feb84b3.pdfIn PDF document text
    • http://files.burnsidecenter.com/uploads/1/3/0/9/130969080/jikamupivazuluges.pdfIn PDF document text
    • http://files.heffernanfoodconsultant.com/uploads/1/3/1/4/131438329/xupoved-rinojotegun.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/1/0430/2117/2897/files/17614436907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/98781703314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/zibigozebimeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/puvonevojuwibejulede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/xinivak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/sharad_upadhye_rashichakra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/pugixurone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/lolesolemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/5876428438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/zevugibimefowerepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/pdf_agama_islam_kelas_xii_kurikulum_2020.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 5

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_off00005a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A82 5472 bytes
SHA-256: 2d91aa2675a8b6d2da0f931cd3547ab3dec3425916c8b460e78f890a75f3faae
font_01_sfnt_off00006d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 10944 bytes
SHA-256: dbd177e925fcd06f4046635a12e43a9e8b1ed05325e875d7624545453601de84

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