Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e96613cc2f34f5…

MALICIOUS

PDF

71.0 KB Created: 2021-03-04 07:57:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 008f5b6e0a219c07cbd8e916c7cbee2b SHA-1: f40ab92709851d48f085492287876287724d5955 SHA-256: 19e96613cc2f34f50a4f0c4601d7330013fe15cc90b8668f90b3c21021332b3b
96 Risk Score

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 URI pointing to 'https://zajinet.ru/wix?keyword=fe+reference+manual+download', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'fe reference manual download'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=fe+reference+manual+download PDF link annotation
    • https://cdn.sqhk.co/goduwonon/7bzifje/65295644255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458404/normal_5fd95fcebe004.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/hfFCOHN/snapchat_stock_price.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370268/normal_5fde49c3573ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5fc77349b5c85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405185/normal_6001481040d02.pdfIn PDF document text
    • http://bamupiwabibajew.mywebcommunity.org/12501435826.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/D5cjgQ8/61946317975.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/fizaxo/huduma_number_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/bo4_zombies_classified_easter_egg_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/88506296904.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/free_printable_farm_animals_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/85260560114.pdfIn PDF document text
    • http://xolevusafo.myartsonline.com/vampire_diaries_season_8_cast_siren_sister.pdfIn PDF document text
    • http://zodiripek.myartsonline.com/2927702116.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/waxokolosukoxez.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/eco_fashion_guide.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_off0000d942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD942 5036 bytes
SHA-256: 4cebec6d970ba39c778ba554239c70a9f7c029c92b35e391fcf2ac779884e82a
font_01_sfnt_off0000ea5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5D 10660 bytes
SHA-256: b950f9e57dd05b70ca069b8ad582325f26531eb57bafca71745ffb87ca1c0b48

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