Malicious PDF — malware analysis report

Static analysis result for SHA-256 a77499c24916730e…

MALICIOUS

PDF

71.8 KB Created: 2021-01-30 06:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8b0196c82dd28e9ead9900c66dd1c3fb SHA-1: 3f0cb1c381321ff83e8d4303339f1596ba26af95 SHA-256: a77499c24916730ecf4788e5cf1875a8bb8fb31f02b08f2110d7681682c6407a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website offering 'C language for windows 10'. This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading a payload or visiting a malicious site.

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://bologen.ru/aws?utm_term=c+language++for+windows+10 PDF link annotation
    • https://cdn.sqhk.co/segisaxa/ihjfNif/piraladoxixojo.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/h9RPjag/nfl_ravens_schedule_2021.pdfIn PDF document text
    • http://bet-info.ru/viwuseronomigozabonep0gg8.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/fgdCggu/favo_de_mel_restaurante_goiania.pdfIn PDF document text
    • http://1xbet-regi.site/46616332395acwgt.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/MQaE2jc/hammer_simulator_codes_for_pets.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/aiajdmO/write_notes_meteorology.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/igijc2t/48013305184.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daxevekiwenux.epizy.com/christopher_robin_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/79086180180.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/cannibal_farm_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/74949433870.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/amazon_app_store_release._apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD152 2960 bytes
SHA-256: ba9dd86ad06677ef82b9fc66565cbe1db364e5caa8fb73f24ce3e10b7ab9a08b
font_01_sfnt_off0000dbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD5 5264 bytes
SHA-256: dcf29261ed0643ff97010bc98c6cc307e43b3382d6a008b0106cd2a86e98723e
font_02_sfnt_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 10564 bytes
SHA-256: 9b29bade3c15fbc89716c37212d31f59b4296986a42b7e765df1a046f53e76a9