Malicious PDF — malware analysis report

Static analysis result for SHA-256 b841c489da814519…

MALICIOUS

PDF

162.1 KB Created: 2020-08-12 13:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b231213ec8a09ba4f2fd2f8bd0e09ea3 SHA-1: 28e72d16fb0101b88dd1937b1800b94dfa763233 SHA-256: b841c489da814519072abb4303299709eb15bd9d07468974575b286bc217c515
134 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=elementos+arquitectonicos+romanicos+pdf'. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=elementos+arquitectonicos+romanicos+pdf In PDF document text
    • http://womaw.ctcercle.org/uploads/1/3/2/7/132740405/lobamofuwozovan.pdfIn PDF document text
    • http://gaxapibo.nathingjess.com/uploads/1/3/1/6/131606490/roviwasaforoxawawodi.pdfIn PDF document text
    • http://files.starspeedwaynh.com/uploads/1/3/2/6/132683063/taxizaf_tenosekalef.pdfIn PDF document text
    • http://files.gcrpc.org/uploads/1/3/0/7/130739570/togota_ronurefab.pdfIn PDF document text
    • http://files.abcbookreview.com/uploads/1/3/1/6/131606762/sodojolobi-nameku-rijivipi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/marriage_d_amour_guitar_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/anorexia_y_bulimia_causas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7424/7063/files/amazing_grace_my_chains_are_gone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/67811610280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/2974006640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/nemipav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6032/1691/files/posejinejadopev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/80815922369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/biology_project_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/zusevuderuxilemowagawiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/cardiopulmonary_resuscitation_procedure.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B7E 5264 bytes
SHA-256: 315bdc48027250508ea788a1ac413cf5bd055431701b43c11b0cb63aa0604277
font_01_sfnt_off00023d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D42 15856 bytes
SHA-256: 040cf75f49db8721eccfd954e8f136c6f55dbf56616e0e60ec4eef8e8196d4a7
font_02_sfnt_off00026c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26C09 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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