Malicious PDF — malware analysis report

Static analysis result for SHA-256 716b3d579ba74df6…

MALICIOUS

PDF

67.1 KB Created: 2021-03-07 08:34:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 069795cdbf9a07572fd03e3df150e913 SHA-1: b896fb032e8b5482689daa488eebc98b8d151598 SHA-256: 716b3d579ba74df69a1128acfa4552a1ba6cc35987ed4002d402f6c33e3ae344
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL, https://midufefew.ru/123?utm_term=coleman+powermate+pulse+1850+generator+price, is likely part of a phishing campaign designed to trick users into downloading further malicious content or revealing sensitive information.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://midufefew.ru/123?utm_term=coleman+powermate+pulse+1850+generator+price PDF link annotation
    • http://tokexal.medianewsonline.com/daxukevegazenewoboxexotef.pdfIn PDF document text
    • http://wutujirola.22web.org/romofigaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471723/normal_5fc728ed03436.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/como_pasar_gramos_a_miligramos.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/king_kutter_6_tiller_manual.pdfIn PDF document text
    • http://memisada.mygamesonline.org/fender_passport_venue_manual.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/wedding_anniversary_wishes_for_my_pastor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5fc6c48de3aff.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/figidireki/150_accounting_interview_questions_and_answers_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98ba1a6-f0a7-4307-b006-338ec702f5f2/how_do_you_use_a_hamilton_beach_roaster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13a67328-08ef-4357-828e-74f997a6d7cd/king_lear_characters_list.pdfIn PDF document text
    • http://mujevevurisul.epizy.com/teradata_timestamp_format_yyyymmddhhmmss.pdfIn PDF document text
    • http://xinuxupenaze.epizy.com/gupam.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/16093924572.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/luzudezutiluxofawifide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/tigofodokaliv.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/baby_shower_memory_game_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_off0000c3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E2 5764 bytes
SHA-256: 11d5110f60d7f403335202bf416521bc3868b110eb11f663052eace85a263218
font_01_sfnt_off0000d779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD779 11784 bytes
SHA-256: e83f0a8a71b1be8de891cfccc794f182f883101c8a29c9a3e7291f7c6c7f7a90

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