Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60e5d78b02af6a2…

MALICIOUS

PDF

69.0 KB Created: 2021-03-22 03:10:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 75955f6f1477eaade527be613dd1bae7 SHA-1: 5dbd43d31fdc6bc0e8ed18ff55b6ba013a332110 SHA-256: e60e5d78b02af6a2cfe68ac3fc9f43deac5f9bf4e79490731965d31d14fa443e
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of numerous external URIs points towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/award?keyword=carmina+burana+full+orchestral+score+pdf PDF link annotation
    • https://ladebixere.weebly.com/uploads/1/3/4/3/134318604/getokezufana_gulevedevejav_juvap.pdfIn PDF document text
    • http://liolika-rsya.ru/jeff_king_soccer_playerw0v03.pdfIn PDF document text
    • http://mattelipsticks.site/befevadaxijaxovuzdzie1.pdfIn PDF document text
    • http://roflan.site/zombie_shooting_game_for_pcw10ut.pdfIn PDF document text
    • https://guwevene.weebly.com/uploads/1/3/1/4/131437413/fovevogawiwas_lubibosewalo.pdfIn PDF document text
    • http://usejus.pro/funevumuxivepixalueyny.pdfIn PDF document text
    • http://gedirobidepud.scienceontheweb.net/salesman_skills.pdfIn PDF document text
    • http://prodive.su/77889083305zfbnw.pdfIn PDF document text
    • http://ravigimojamel.mypressonline.com/whirlpool_duet_sport_dryer_belt_size.pdfIn PDF document text
    • https://cdn.sqhk.co/dikozogub/v3jhYGh/19047357624.pdfIn PDF document text
    • https://gukujevanedin.weebly.com/uploads/1/3/5/3/135344472/xakegeguwufi-negilenuvu-sanixulujaf.pdfIn PDF document text
    • https://bogekivusuwi.weebly.com/uploads/1/3/4/6/134604255/gazifawedusesibila.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/uhaPgjX/fire_alarm_testing_report_format.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/9025178.pdfIn PDF document text
    • http://wopexobow.mywebcommunity.org/spanish_alphabet_pronunciation_chart.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitujiduruv.myartsonline.com/xasegot.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/kingdom_woman_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/binomial_probability_problems_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/309a3080-e6ee-457a-b444-d3fc7152db96/lexus_gs_450h_f_sport_horsepower.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/pegibebegiroveki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/783a25fe-e6a9-4b6f-82c4-539b825413dc/49886100054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f620f3a1-e186-4ae9-a87f-ced4dcd0ce80/the_man_in_the_gray_flannel_suit_trailer.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_off0000cfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB9 5440 bytes
SHA-256: b543fc1a8db181002ad5a3c85be8616b517d6ce603b4ae8708df09ee3dbf1359
font_01_sfnt_off0000e1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 10600 bytes
SHA-256: 96ab67fbbe209c0f3e33bcc12280b9818e5e5b9a5a0a4a44042b24b827d7eb50

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