Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade3a3ebfadfe7ef…

MALICIOUS

PDF

38.0 KB Created: 2020-08-09 08:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d7c8eda2b80e0960411840a0c63fee4 SHA-1: 6dfed9076becd25d880466e40b18dfde94ecc58e SHA-256: ade3a3ebfadfe7ef5b58ff8f9c726707c0eeb597be1790738c60aa63f601b871
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to suspicious infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to lure users to a malicious site, likely for phishing or further 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.
  • 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.com/pify?keyword=audiometria+clinica+portman+pdf In PDF document text
    • http://files.rossyoga.com/uploads/1/3/1/4/131408369/puxuwaredajage-geronu-lefevuzojo.pdfIn PDF document text
    • http://files.actionautoracingllc.com/uploads/1/3/0/7/130776033/fugefiso_teboxu.pdfIn PDF document text
    • http://wuwijidoz.otellis-restaurant.com/uploads/1/3/0/9/130969723/tekaseniru.pdfIn PDF document text
    • http://files.petcardia.com/uploads/1/3/1/4/131409717/5725b249ee.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/1/0431/4071/0566/files/zobosifuxajigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/89834043576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/64019776592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/kisiduwadurubifano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7083/2283/files/67489603078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/rekey_schlage_deadbolt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5317/7237/files/subsetting_a_dataframe_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/49456971108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/ford_3600_tractor_manual_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/bullying_acoso_escolar.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_off000057b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B5 5112 bytes
SHA-256: 65f5f38db5d26e72fce99a71853e79b76fa380c8ee4e10fd79e4254cab3d9131
font_01_sfnt_off00006901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 9952 bytes
SHA-256: 077ea22c6a2a2b6e7d8630f572b81a272b7e47a9225157cde8dc84253927079f

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