Malicious PDF — malware analysis report

Static analysis result for SHA-256 772ea4a8f996ab67…

MALICIOUS

PDF

69.2 KB Created: 2021-01-22 13:09:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 45e735e7a6f25f3c47378388f6f09795 SHA-1: 0ff49d8104c88460801235185648f071c2c2457f SHA-256: 772ea4a8f996ab6730e789a6a303adf0743939f0737cae22a0eb0238f4a7e699
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The PDF contains an external URI and an image lure that redirects to the URL https://trafffi.ru/123?utm_term=i+am+flying+to+the+moon+2, indicating a phishing or malware distribution attempt. No scripts were extracted, but the nature of the PDF and the redirector suggests it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafffi.ru/123?utm_term=i+am+flying+to+the+moon+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477655/normal_5fd1c07841c0b.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/oIhbBih/8898657997.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/6eIiiKK/stick_cricket_live_cheats_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5fd1d0a8b0514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371004/normal_5fcedcb52f894.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_5fd833f86e94e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_5ff88e274bca5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394060/normal_6004814ea45dc.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/ehfqse5/gexujos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nademopor/the_way_of_shadows_brent_weeks.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/58377215021.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/novulupetikawokurudinuvak.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42A 5080 bytes
SHA-256: e191cb23cd7b137d833f7d07212acbe672eda50b0792b0f8d726f9ce5ccf47ae
font_01_sfnt_off0000e562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE562 10268 bytes
SHA-256: 3897f61b223a75c998045fefbf199852d8b9099cf39e5bf75ecf1643aa55d98a

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