Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e8b1f3b2a1deda…

MALICIOUS

PDF

81.8 KB Created: 2021-03-21 21:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 33d78fd00ab3c8feabd2281c0b9bc8ce SHA-1: 58b569697abc9e786e016ddfa57b267e63cf184e SHA-256: 06e8b1f3b2a1deda82c9e96137930f291082586daaf16228213048ae091c3c72
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and redirector infrastructure, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=how+did+humanism+influence+the+works+of+renaissance+artists In PDF document text
    • http://kkkirrreeee.space/punifejiwapaak49b.pdfIn PDF document text
    • http://visionnew.xyz/moviestarplanet_vip_mod_apkgdd9n.pdfIn PDF document text
    • http://thelandofbadideas.com/western_digital_my_cloud_app_for_windows_10b62ef.pdfIn PDF document text
    • http://securespot.ru/black_and_decker_20_volt_lithium_circular_saweeb3p.pdfIn PDF document text
    • http://dreamingdeveloper.com/al_que_esta_sentado_en_el_trono_piano_tutorialfeeho.pdfIn PDF document text
    • http://jamonomikusuka.22web.org/maplestory_sea_full_client.pdfIn PDF document text
    • http://portkamesto.site/emoney_client_portal_videomu26b.pdfIn PDF document text
    • https://meluwirukumipi.weebly.com/uploads/1/3/1/4/131483006/b04c4b388.pdfIn PDF document text
    • http://tehnikator.ru/causative_verbs_exercises_with_answers_doc04hec.pdfIn PDF document text
    • http://birjand.design/galewezokiwa32j8j.pdfIn PDF document text
    • http://dagulofevururuk.22web.org/jasiverobovinolij.pdfIn PDF document text
    • http://marketitaly.pro/xafufuzagotn9hb9.pdfIn PDF document text
    • https://sorajofuwomukiz.weebly.com/uploads/1/3/1/4/131407138/716b4b0f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e415ea3b-112f-41ae-afbc-807ec33c2841/melabafe.pdfIn PDF document text
    • http://gemiwojo.epizy.com/53489645292.pdfIn PDF document text
    • http://dasilumenuf.rf.gd/60384289747.pdfIn PDF document text
    • http://xezexudal.epizy.com/7044369464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb9fdc7-71ed-4ec4-b916-1c39e3f2bfe2/frindle_book_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c36c44b5-8af6-49f1-bc24-bb4991e0d615/song_of_solomon_chapter_1_and_2_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b98434-3d8d-4ea1-b4b6-8721ce349a1b/saropomafoxadad.pdfIn PDF document text
    • http://tubagawidi.epizy.com/zedikanakuv.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_off0000f2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C3 3256 bytes
SHA-256: 7e3ba67a3eb763036d82902cd00c71050e3296b893cc59eeae01fa10e2a85c40
font_01_sfnt_off0000fe71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE71 5376 bytes
SHA-256: d6fd2d4d1dc917300036a680a279a65907c0107a1b53a66944cd39abedbed5b6
font_02_sfnt_off0001109b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1109B 11260 bytes
SHA-256: 2362084cfb186f0760369c164dab3ed84f6c3f0874a8aa2b25f1baeb9da2a7a7

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