Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a330fb8b40589f…

MALICIOUS

PDF

39.1 KB Created: 2020-08-18 23:36:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe058b21f42aa9fa5af2b35090149ceb SHA-1: 8e748f9a381b4bbf8583ebf0b13b13f7b0203da9 SHA-256: 37a330fb8b40589fc8cc7e6c4a7b5d6b1811b81433db7f9e7661a1b9c46986ef
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body text, though heavily obfuscated, contains a URL that appears to be a lure for downloading an emulator. This suggests the PDF is designed to redirect users to malicious sites, likely for further exploitation or malware delivery.

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.cc/pify?keyword=winkawaks+1.+60+emulator In PDF document text
    • http://vulamo.idrha1.com/uploads/1/3/1/4/131483492/nusiborezodegawexiv.pdfIn PDF document text
    • http://files.dovergreekfestival.com/uploads/1/3/1/8/131871518/19385.pdfIn PDF document text
    • http://files.tanoramaofconcord.com/uploads/1/3/1/3/131383760/546019d443.pdfIn PDF document text
    • http://files.tylerdiscoverslife.com/uploads/1/3/2/6/132681080/xamumutidagix.pdfIn PDF document text
    • http://files.kdgdistribution.com/uploads/1/3/2/6/132695306/togalasi_pivotinanulo.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/1/0434/4525/6352/files/rocket_thrust.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/mumulinonaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/personal_training_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/78680567815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/drop_primary_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/87335722918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/jharkhand_b._ed_entrance_exam_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/88265395328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/960_fps_camera_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/30453518995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/hospital_management_system_final_documentation_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/domanusosexit.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_off000059e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0 5380 bytes
SHA-256: 0fa4939c4b2906cd55bbd219afbcd9edba3f87c9c9fcbd9413bb04769f4b2105
font_01_sfnt_off00006c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C30 10388 bytes
SHA-256: df8a1d8e3934110c68d3ba9b783ed73787e5a30f2d38caa5e07ec7a7e7c0d43c

Open this report in the interactive analyzer, or submit your own file for analysis.