Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f3480a237b5e16…

MALICIOUS

PDF

58.2 KB Created: 2020-08-20 04:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: deec88e31c4094a355604f543f07c608 SHA-1: 7674beeb888b014a01fc5d32dae7bd6c472a4486 SHA-256: d3f3480a237b5e167d6f80f6273d81561ef805da5454d4fe69a59e06e2f074b5
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.ru). The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'European journal of haematology case report'. The presence of a link farm and a redirector suggests a phishing or credential harvesting attempt. No scripts were extracted, limiting the analysis of specific execution chains.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=european+journal+of+haematology+case+report In PDF document text
    • http://files.apexfbc.org/uploads/1/3/1/0/131071167/wujogawumuko-fuliw-tumiramale.pdfIn PDF document text
    • http://files.roundislandlightmichigan.com/uploads/1/3/0/7/130775229/niduvuropoluj.pdfIn PDF document text
    • http://files.littleislandapothecary.com/uploads/1/3/1/3/131380341/fe7582.pdfIn PDF document text
    • http://files.broadwaterdragons.com/uploads/1/3/1/3/131379054/zomudakumeve.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/1/0431/7010/3452/files/tazujowifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/20914359970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/applied_physics_letters_reference_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/carmine_gallo_the_apple_experience.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/34656893361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/dalujobevenudux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/duxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0996/4192/files/vatogogogomukalolupojam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/muwerojuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/vinodegurabuziwupe.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_off0000a3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B8 5564 bytes
SHA-256: da9065f9df6ed100be7d4f6a424e33cf2999645af2c9e5941933d900b323157c
font_01_sfnt_off0000b691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB691 10952 bytes
SHA-256: ec905d434522e5955777d2437ff42806271e80b80b16804c82c51ab017cfff91

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