Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7983280e8d61b0…

MALICIOUS

PDF

86.0 KB Created: 2021-01-21 16:03:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 07cfb6a705cbc0798fe15c6582b0959c SHA-1: 59244719147f657a43dc188c0b5ec1dd473a19b4 SHA-256: 6a7983280e8d61b0ab412e08c1c15d44cf3c784386e82a67a3a509a1959b1e13
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malware. The document body, though heavily obfuscated, suggests a lure related to language translation, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/123?utm_term=neapolitan+language+translator PDF link annotation
    • https://cdn.sqhk.co/kagalitisup/UhdaozX/opposite_side_of_the_earth.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5fab901fcfd9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fae8ebf8b976.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f94183e7c9a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402503/normal_5f92f09baf4d3.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/TyWWifK/zoo_animals_mod_1._12._2.pdfIn PDF document text
    • http://dabuzasomadote.22web.org/2016_challenger_hellcat_performance_specs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467979/normal_5ffbde838f8a5.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/jevelel/bazebanerod.pdfIn PDF document text
    • http://zomimek.epizy.com/16077020587.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/wedadudip.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4F 4836 bytes
SHA-256: ff245f96dd0a79eafcf675025a186dae94332b01b1120a816a4462e92fb800cd
font_01_sfnt_off0000fece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECE 12680 bytes
SHA-256: 46a1128ce9e2198185a8f3dcc715ddcc66a1cec219fec205b019ae17e5560c05
font_02_sfnt_off00012736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12736 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00013c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C63 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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