Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b868c5d3ee12569…

MALICIOUS

PDF

77.5 KB Created: 2021-01-17 16:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 37618c096471d4f03ed1a593ff0f431c SHA-1: 3ce31adc8ba7c47985f58ce6859b0f6ae691ee3c SHA-256: 1b868c5d3ee12569d82674218b32356ecbf49fe0cd5ece1941e3e3b8344d1e94
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to a URL associated with malicious redirector infrastructure, specifically disguised as a search result for song lyrics. Heuristics indicate this is a phishing lure, and the ML classifier strongly supports a malicious classification. No scripts were extracted, but the presence of malicious links and the overall classification suggest the document's purpose is to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=ae+dil+hai+mushkil+lyrics+in+urdu In PDF document text
    • https://site-1177068.mozfiles.com/files/1177068/36273722248.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/IhbheUW/child_care_licensing_act_colorado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5fe80a91aec99.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/ghLxifK/fifepofewaneji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5fffdf6179234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f8952852b224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372105/normal_5fdf80f2da70f.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/EijjbnA/88127714840.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411481/normal_5fb8c8e849e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_5f8fab55834c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451205/normal_5ffc11a57ee4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390382/normal_5fe713b66860c.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/tokit/pivakoripodufebokororiga.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/biology_textbook_class_10.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/5297848565.pdfIn PDF document text
    • http://lisokabosexipep.epizy.com/97801410093.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_off0000dc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC64 5024 bytes
SHA-256: 78bbabad745faeb8d6b43708f5a3e08341bd03acec31f2742b64c99225955dbf
font_01_sfnt_off0000ed3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3E 14984 bytes
SHA-256: 067655d9a0c0489197263ab4eaf4e8eac9f48cf61f9f09f599b975b99f03eb34
font_02_sfnt_off00011ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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