Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab72d2967af6497…

MALICIOUS

PDF

64.9 KB Created: 2020-11-11 00:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fd3a154bd972680622dc67220b055bc0 SHA-1: 11e4d5652b2a6e5c86bc6fb9bda252d8a5cb8a91 SHA-256: fab72d2967af64971f19e25324015046d807824cdaea3454eb7232468f43b239
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic indicating it's a phishing lure for free downloads, redirecting to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL is likely part of a phishing campaign designed to trick users into visiting a malicious 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
  • 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://traffset.ru/aws?keyword=unblocked+games+77+basketball+championship PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f879f4558865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f88305497cd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424029/normal_5f97fe5f24804.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_5f97900c53633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417414/normal_5faa21376e34c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_5f8af4cc21423.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/zaxawetawupo/causes_of_lung_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/xoxomaboxujofupimopad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e717edb-297d-4318-8aa5-425c0c7ae1d9/mewewujeraduzogejisasox.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/bukilutevavipurigixute.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/arduino_uno_hardware_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/official_cuddle_buddy_application.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 2

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_off0000bf4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4E 5668 bytes
SHA-256: a19c2d6f00bb1d1ae53168e4e7f725e63602718f5fa75f4078f4978e8f80a58e
font_01_sfnt_off0000d277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD277 10564 bytes
SHA-256: 84aa2a63c1aed2c6b9ecfe1906f63b06c2c21f58ff99a788e61d746a49247aec

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