Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be4d28bddac3444…

MALICIOUS

PDF

76.9 KB Created: 2020-12-26 19:59:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1282e09d13d73a062b29d5d3f94e3090 SHA-1: bd60e8ea6fa7cc528644b57927dcc1cb9392d55f SHA-256: 3be4d28bddac344451044fdaac651cbb5c983e64fab445707a224c97d476b52e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to product reviews.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=lee+valley+rechargeable+hand+warmer+reviews PDF link annotation
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/9773421.pdfIn PDF document text
    • https://rupafiwizumuwon.weebly.com/uploads/1/3/4/4/134442684/maseraj.pdfIn PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/ff60ce64face52.pdfIn PDF document text
    • https://punelita.weebly.com/uploads/1/3/4/6/134679726/risubazufigurodi.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/ZmggUZ1/27789056536.pdfIn PDF document text
    • https://cdn.sqhk.co/lizupasepafu/ehiBkih/dragon_ball_z_infinite_world_online_game.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/61424733018.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/tetajibamojujugoxepuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0c47e8f-d735-4250-b4b7-7dc52f07af5b/airgas_benefits_directory.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/2009_chrysler_aspen_repair_manual.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://www.gnu.org/licenses/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000de9d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDE9D 12308 bytes
SHA-256: a73194c34057dd5754b2b1e7c240e087fa83bc7770d539f12f0536d9b25307d3
font_00_sfnt_off0000c22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22B 5688 bytes
SHA-256: ae083a0fc8abdc576aef832d8a1a7e549049dbcb53e7113073e1114d1b18ee0e
font_01_sfnt_off0000d566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD566 1936 bytes
SHA-256: 84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
font_03_sfnt_off00010165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10165 10792 bytes
SHA-256: 459de0b45942f117aa947c8a51197db7e0681cb54d5b45e5d160161bf235c2dd

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