Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ece7fdbbe3d962…

MALICIOUS

PDF

77.6 KB Created: 2021-02-22 02:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dec20833e607af01e1a1909d3e1c5c7d SHA-1: 1179848086d5b205f4ee32d52a20f21c0c6726b8 SHA-256: 59ece7fdbbe3d9624f42902ed61f12996baf406e15d0ef042cf0b6da8a68bc1d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to suspicious domains and are likely part of a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. The document body, though heavily obfuscated, suggests a lure related to 'Cuisinart instruction manual coffee maker', aiming to trick users into clicking the embedded malicious links.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=cuisinart+instruction+manual+coffee+maker PDF link annotation
    • http://lasleymarkt.ru/competing_interests_scientific_reportsdnrqe.pdfIn PDF document text
    • http://wbigs.space/water_supply_and_sanitary_engineering_lecture_notesly203.pdfIn PDF document text
    • http://onlyforyou.space/74762757343tl8a2.pdfIn PDF document text
    • http://future-techno.ru/sukojofunixizinipio8e77.pdfIn PDF document text
    • https://moxatabik.weebly.com/uploads/1/3/4/8/134885740/wupezo.pdfIn PDF document text
    • http://mmamba.ru/milukejuregeramogemoj812jd.pdfIn PDF document text
    • http://art-practice.org/6414635397969qnt.pdfIn PDF document text
    • http://meinekarten.best/eternal_rogue_apkerepl.pdfIn PDF document text
    • http://maska-respirator.shop/4990643491k7xwp.pdfIn PDF document text
    • http://it50discount.pro/256937446782ykhh.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/kozewuposoridil/delekokagipeluxadifosepi.pdfIn PDF document text
    • http://mixonanax.epizy.com/wuxet.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/angry_neighbor_hello_from_home_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/descendants_3_night_falls.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/27346079991.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF486 4996 bytes
SHA-256: f1662a7b0b9b3a724df63f7b54018d74bad113e8db546281953891c53da85c93
font_01_sfnt_off0001056c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 10440 bytes
SHA-256: efdff06920df5e80e1a0a2ac68dbbb22df583c6ba8ec04a8aecf5057ffc2389d

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