Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ed94e5b3733899…

MALICIOUS

PDF

71.7 KB Created: 2021-02-18 07:30:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8f8a3a105ff95158348db9e80974cfa8 SHA-1: 46bd1591fea2e45a81f109ecc3215b8ec0fac279 SHA-256: 34ed94e5b3733899e8c2c59ce3ff9c5b7e1ab6005d54e39a83de57f92c049fbc
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 URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference 'fighter diet pre workout reviews', suggesting a lure to entice users to click the malicious link.

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://baarspo.ru/strik?utm_term=fighter+diet+pre+workout+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447278/normal_601e8f0ebb0db.pdfIn PDF document text
    • http://nuverlites.online/mcpe_horror_maps_with_jumpscares_multiplayerewhgi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_600dd26ad44e8.pdfIn PDF document text
    • https://fozirufimagez.weebly.com/uploads/1/3/0/9/130969558/7651027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_602b5d50ab310.pdfIn PDF document text
    • http://help-mediasupport.com/aha_acc_valvular_heart_disease_guidelinescfpr3.pdfIn PDF document text
    • https://xaledojasuk.weebly.com/uploads/1/3/0/9/130969600/tuxiwotalojuno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419645/normal_5fe3f7df122e0.pdfIn PDF document text
    • https://derigogo.weebly.com/uploads/1/3/4/0/134017063/204ffc4fedeccda.pdfIn PDF document text
    • http://jilet1.club/dajosobukuwd1hx.pdfIn PDF document text
    • http://simcars.ru/93235443623kwryh.pdfIn PDF document text
    • http://www.campogrande.ms.gov.br/medical-articles/pre-8f1-workout-meal-for-IOD-fatIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/bittinger_intermediate_algebra.pdfIn PDF document text
    • http://fositelorefux.epizy.com/online_jewelry_store_business_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/petibefisugazezimi.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/banitoxirexuwovedurunu.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/aline_dress_pattern.pdfIn PDF document text
    • http://dojidusajotat.epizy.com/business_plan_for_startup_business_template.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_off0000ddf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF7 5148 bytes
SHA-256: 652fd3cc167242ddaeb9859551e9bd151ff0822f159abd6e1dbf7be599eb8d18
font_01_sfnt_off0000ef95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF95 9900 bytes
SHA-256: 95f00815960ec155b163a1ac2eac4f3cdcbefd7f4c9d2f997edf687d161cd97e

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