Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3817004254f514…

MALICIOUS

PDF

46.4 KB Created: 2020-08-08 19:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0c73358a9ad2d2289e583caf1e8641b SHA-1: 618b64a2861a82ac68084cbbfa0446833ed066b9 SHA-256: bd3817004254f514ea568ecc0ebe9f1e4af4fa139538f6570a33b86a7bc62c66
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though partially corrupted, includes the URL that is also present in the heuristics, suggesting a lure to download further content or visit a malicious site. The ML classifier strongly indicates maliciousness, and the presence of a redirector link points towards a phishing or malware distribution attempt.

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.cc/pify?keyword=escala+de+barthel+modificada+portugal+pdf In PDF document text
    • http://files.nausetinsulation.com/uploads/1/3/1/3/131398125/mefitita.pdfIn PDF document text
    • http://files.deliveranceforchristians.com/uploads/1/3/1/1/131164462/674bc0e58ae8.pdfIn PDF document text
    • http://files.proteus-mrighifu.net/uploads/1/3/1/4/131437932/rufuzisenaw_bixagewezuromez_dasamoxiretozam_pazuxigulumi.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/1/0430/2657/9610/files/centennial_college_progress_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/31499084366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/suzofebikegufuzijav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/4970148646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0797/5335/files/wituropunobatudiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/51360351253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/ramalofosoxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/22406643384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/dynamics_chapter_12_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/16651712400.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_off000074c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C2 5668 bytes
SHA-256: 49a2727065004294c32a5eee8e00578c837bf57ad91b94d80723d91a2d376acc
font_01_sfnt_off000087d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D9 10716 bytes
SHA-256: 387e66efe86221b86c7290f4fd477c4899f7f2e3e24e2830590a5ef60f38683d

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