Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eae8da1f99e2f01…

MALICIOUS

PDF

75.0 KB Created: 2021-06-10 17:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2a43227666d3aa1cd2eabdf1ec7ac274 SHA-1: e795b8ce21357e86e51337274d7f323031c053b0 SHA-256: 2eae8da1f99e2f0185734f3fae0841b17b76f6d10f2ca467e550fc05732750e1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a URL associated with a potential phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. 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 further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://catamma.ru/pbw?utm_term=naruto+senki+android+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489835/normal_6023df46201f2.pdfIn PDF document text
    • https://dajukufatob.weebly.com/uploads/1/3/4/3/134345308/xemeripakixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_604a784234ced.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454808/normal_6041c04ef0649.pdfIn PDF document text
    • https://vakigosem.weebly.com/uploads/1/3/4/4/134480352/jopugun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5ffa30a028970.pdfIn PDF document text
    • https://wovotupiw.weebly.com/uploads/1/3/7/5/137502291/jelev.pdfIn PDF document text
    • https://koponabunabo.weebly.com/uploads/1/3/4/5/134520941/lojaxafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415065/normal_604480e4e27ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456372/normal_6001d067829f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385613/normal_605506d172cfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wepadigisita.pbworks.com/w/file/fetch/144631677/how_to_download_garageband_on_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44845b4f-3df2-4827-89cb-9fa9e32a09cd/how_to_end_month_to_month_lease.pdfIn PDF document text
    • http://xuruzinijub.pbworks.com/f/damar_arabesk_mp3_ark_indir.pdfIn PDF document text
    • http://tezalef.pbworks.com/f/how_to_find_dipole_moment_of_a_molecule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3463d1c9-6e64-4897-8279-6945d1a18568/how_many_miles_will_a_yamaha_r6_last.pdfIn PDF document text
    • http://dijakezepo.pbworks.com/f/convert_to_editable_word_free_ocr.pdfIn PDF document text
    • http://nutafojijoki.pbworks.com/f/5866419553.pdfIn PDF document text
    • http://tasonupopam.pbworks.com/w/file/fetch/144501942/tasizatoxipaximapowuri.pdfIn PDF document text
    • http://ziludezubeju.pbworks.com/w/file/fetch/144462684/ulead_video_studio_11_full_version_free_download_with_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e1fea1-5882-431b-bb67-3b43db73f5e0/16875402959.pdfIn PDF document text
    • http://mupalunava.pbworks.com/w/file/fetch/144580023/libro_de_rinoceronte_resumen.pdfIn PDF document text
    • http://ronejoxerer.pbworks.com/w/file/fetch/144933879/84243895574.pdfIn PDF document text
    • http://ruwezebom.pbworks.com/w/file/fetch/144427692/24602395801.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_off0000e841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE841 4872 bytes
SHA-256: 5a219630480d8454a778b8a9a51a1c57d3bc88c7c81e423614b4f34d96e3a4b5
font_01_sfnt_off0000f8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E8 11212 bytes
SHA-256: ab789fd69f95439548715d8fb643a019ef4d83a9706f372271f35a10566afcaa