Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0bf2bda9e8867c…

MALICIOUS

PDF

72.6 KB Created: 2021-03-03 08:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 325953a343a1dbd9d6d4f752c1bc7bfd SHA-1: ad53f3b3be6c00bedfaa259a5e47a851c17089f1 SHA-256: ed0bf2bda9e8867ca56df81aec1c19100a12d98821e44afc30b4e5b9ac9462ef
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with the primary one being https://jottigo.ru/strik?utm_term=how+to+clean+badger+1+garbage+disposal, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely for credential harvesting or malware delivery.

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
  • 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://jottigo.ru/strik?utm_term=how+to+clean+badger+1+garbage+disposal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451049/normal_60347a0c09afa.pdfIn PDF document text
    • http://nesobaka9.xyz/vodinumanimezigix16jmr.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/hbY7YGJ/marine_corps_scout_sniper_tattoos.pdfIn PDF document text
    • http://iwhite.space/foxyland_ps4_trophies12ufa.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/Yhehcig/29050834855.pdfIn PDF document text
    • http://superheatbelt.xyz/wordpress_tutorialh1v9z.pdfIn PDF document text
    • http://xsafak.com/15041091209f3yzp.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/kenmore_mini_fridge_settings_1-7.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/XDvfqhh/71053104539.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/Rih4hfr/tiktok_logo_neon_red.pdfIn PDF document text
    • http://pejokepi.mywebcommunity.org/gadalotuvet.pdfIn PDF document text
    • http://bonifacy.site/antimanual_de_filosofia_resumen_capitulo_43he7n.pdfIn PDF document text
    • http://sunazeremitiwu.mypressonline.com/learn_autocad_3d.pdfIn PDF document text
    • http://construt.site/senator_blumenthal_contact_informationzgiwg.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/83185376707.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/jimyjak/international_business_salary_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/xgehjce/63198071516.pdfIn PDF document text
    • https://cdn.sqhk.co/moturira/djfgcjc/arduino_tcs3200_color_sensor_project.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://widifusi.myartsonline.com/captain_underpants_the_first_epic_movie_characters.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_off0000de80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE80 5484 bytes
SHA-256: a0c15aae5a34e05769a0fc7947f236ce1f04ed135082a6c818116bb3cf56aba3
font_01_sfnt_off0000f145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF145 10488 bytes
SHA-256: 084528e70582cb1247df9cacdd72f5f0a0cd0c6389c665feda194bc8d7e5c97c

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