Malicious PDF — malware analysis report

Static analysis result for SHA-256 c803244100a31448…

MALICIOUS

PDF

88.9 KB Created: 2021-02-28 04:11:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3ad8ca209e16af5c15929398ded0773a SHA-1: 067a1745b8408d82f6b03370f286c697c652ae6b SHA-256: c803244100a31448d183d17dc47e9866f5857923fb6be250ade81df4a3b43c6b
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 a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs to a domain associated with malicious activity, likely to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a camera review, aligning with the phishing intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/award?keyword=nikon+f50+review PDF link annotation
    • https://cdn.sqhk.co/jezaziritav/Fhbnu2I/saving_jane_girl_next_door_karaoke.pdfIn PDF document text
    • https://cdn.sqhk.co/nanijamu/AY52Mhh/16854388186.pdfIn PDF document text
    • https://cdn.sqhk.co/mivadunoxo/GHhjQ4G/50406215801.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/jDhbwXp/devanofev.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/2Z4fgca/wavetosilir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5fce8702a1703.pdfIn PDF document text
    • https://cdn.sqhk.co/dodiniwotud/jehcOIS/10703894019.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/what_is_the_best_call_blocker_app_for_iphone.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/libro_azul_spark_2015_ltz.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/nawuzotowinidudixofas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381104/normal_5ffd0200a7211.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/Jhiz6Re/nuvaxifi.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/jbPjbhg/midevesubavajakazelebu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426279/normal_5feb716b87d75.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/rudelazifizuvo/wolaropeguzudo.pdfIn PDF document text
    • http://femisudave.rf.gd/zigupata.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/greek_alphabet_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/77533266809.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12296 4792 bytes
SHA-256: 6207e6939003ea3ff69b8650c310152f102cee6ee4ffc5ee91ce357d3ea246a9
font_01_sfnt_off0001331d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1331D 10364 bytes
SHA-256: c7b7f53ccc00dab391d060c485a98545056ed824d5515585dde7115bf74cea85

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