Malicious PDF — malware analysis report

Static analysis result for SHA-256 249dbc457b53f2fc…

MALICIOUS

PDF

92.5 KB Created: 2021-03-15 13:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5d466a73f339cdfa2ad22e047b2a495a SHA-1: 9a11c2c433a66a2f5b44fbf469269aa66a3c9e7b SHA-256: 249dbc457b53f2fc336bcd2ea2debb93fb765b80bf6cd9b1b7b079b179806836
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jumiwimov.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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://jumiwimov.ru/wix?keyword=maplestory+blaze+wizard+training+guide PDF link annotation
    • http://cheapestshop.xyz/petta_movie_audio_songs_mp4wu6qm.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/Xhejjjf/snow_slopes_milton_keynes.pdfIn PDF document text
    • http://gooddevice-online.com/52602450984gbm2q.pdfIn PDF document text
    • http://umniashka.ru/xifirit1h5i.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/KLhagi8/football_coaching_vacancies_london.pdfIn PDF document text
    • http://lerob.info/sanulesozikedapurodo7bk1q.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/hbIL7gh/felofuwegejapuvosodafa.pdfIn PDF document text
    • http://mimedilubaj.22web.org/the_pioneers_of_african_literature_in_european_languages.pdfIn PDF document text
    • http://fozogadixanemo.iblogger.org/sagikozonedefugafurogife.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/ab706tA/flickr_json_api_tutorial.pdfIn PDF document text
    • http://lessonsonline.site/361929486165z8ot.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/voxulija/nadovabiliniwejepedidu.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/robotica_carrera_informacion.pdfIn PDF document text
    • http://xudazefujigi.rf.gd/young_thug_gucci_again.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/where_she_went_book_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/vorafilos.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/sda_hymnal_with_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/ogilvy_creative_brief_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/44454269665.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_off00012811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12811 5516 bytes
SHA-256: 6a43f1ba976d8e748df0889d5fc0e9733313d188fec14c6a2eae1657639b6901
font_01_sfnt_off00013b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B06 11776 bytes
SHA-256: bb30c8d54cab984fb04719acb75984f34141bed5e71347f9d1bab6363b53132e

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