Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d185f0b27b92000…

MALICIOUS

PDF

33.1 KB Created: 2020-08-23 15:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b487248f3c90a3996d9d5814d03dfb98 SHA-1: fcb59a26b91ca74782ddd127b3b2e308f0543405 SHA-256: 3d185f0b27b920003f621a648d9f2bacfb1c1a577aab81ee8d8640758480196f
194 Risk Score

Malware Insights

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

The PDF contains a link farm with multiple embedded URLs, including a known malicious redirector at 'https://ttraff.com/pify?keyword=cancionero+pascua+joven+2018+pdf'. The document body, though partially obfuscated, also contains this URL, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links points to a link farm attack pattern.

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.com/pify?keyword=cancionero+pascua+joven+2018+pdf In PDF document text
    • http://files.chesssaveslives.com/uploads/1/3/1/3/131381044/gonerigogalo-nujugob-tobazetofomuful.pdfIn PDF document text
    • http://files.swanleeartdesign.com/uploads/1/3/1/4/131437615/1872905.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/1/0457/3734/5180/files/18944224546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/contending_forces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9083/7655/files/belle_de_jour_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/validity_and_reliability_in_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2630/9543/files/23972235505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/kexitakozasixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/definition_of_student_motivation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7614/files/47497246100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5892/1621/files/67493563843.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 6

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_off0000413d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x413D 5680 bytes
SHA-256: 31b5658aab3c7b4a9d78076dae430ed2c70c18c27af0145ce7d5f9065359f25e
font_01_sfnt_off000054aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AA 10304 bytes
SHA-256: 342d3fc7cccdb3f4f66f5ca7ac9b4902345d7363828c5d7292e68cf1b7806d29

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