Malicious PDF — malware analysis report

Static analysis result for SHA-256 b54e8f0a630c2a17…

MALICIOUS

PDF

82.9 KB Created: 2021-01-14 23:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 19519913a8dc87160686c7c0992bc3f2 SHA-1: 6a120fab550b84014127cc40595a0cb3c03e4580 SHA-256: b54e8f0a630c2a17d505e6e78a15978c0ac6ec740c3480aab9e82772a16efc73
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file exhibits characteristics of a phishing or spam campaign, leveraging a 'liturgical calendar' lure to disguise a large number of external links. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with a specific focus on SEO redirectors, suggesting an attempt to drive traffic to potentially malicious sites. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=liturgical+calendar+2016+pdf PDF link annotation
    • https://site-1239165.mozfiles.com/files/1239165/96025424632.pdfIn PDF document text
    • https://site-1215985.mozfiles.com/files/1215985/fodezabejogumeleli.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/ggj1Jii/phonepe_upi_recharges_investments_insurance.pdfIn PDF document text
    • https://site-1241671.mozfiles.com/files/1241671/riwibekaxogonoxozipopo.pdfIn PDF document text
    • https://wimupajano.weebly.com/uploads/1/3/4/6/134682998/2cacf10.pdfIn PDF document text
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/ffb83b25e32c.pdfIn PDF document text
    • https://site-1166752.mozfiles.com/files/1166752/linuwejudodapetabo.pdfIn PDF document text
    • https://site-1174105.mozfiles.com/files/1174105/bivumawebonetabokirigiz.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://s3.amazonaws.com/juduk/kimaduferapilomozoremo.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/apex_learning_answers_american_history.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/yasin_sura_bangla.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/gagesefilevozivebiluvetaz.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/24791464871.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 5340 bytes
SHA-256: c893401e13acb8de9642bfdefa76e860b61ba38007ea79acc7414f5c77780d2c
font_01_sfnt_off000102e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E1 15036 bytes
SHA-256: 5c3ed4a31753df9622e95d00ff801ebea0ab839cad02d38d8c8c5b06aa9cbabb
font_02_sfnt_off00013052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13052 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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