Malicious PDF — malware analysis report

Static analysis result for SHA-256 3227bffc032d1a10…

MALICIOUS

PDF

76.5 KB Created: 2021-03-14 23:08:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a23071211dee1ac31afecfb2d482b590 SHA-1: 2226107ab8bdbd02ec06c63d7223cb5e73953d3b SHA-256: 3227bffc032d1a1030246890e5824393798779254a6485fe058f0161b46c2970
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('ponafet.ru') and flagged by heuristics as a potential link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/strik?utm_term=oster+turbo+a5+2-speed+clipper PDF link annotation
    • https://s3.amazonaws.com/lomiwexuva/giuseppe_terragni_transformations_decompositions_critiques.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/aphg_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/peaky_blinders_sad_song_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482618/normal_6041835b89d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_6009dacbaee2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477637/normal_5fe3ec450736b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499300/normal_5fc9be3ed74b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447096/normal_602b4c8cb8d83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_602afd43c6979.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/wimuxesidakulafevikuloki.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/the_little_brown_compact_handbook_9th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/10_basic_elements_of_poetry.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/what_are_the_elements_of_a_song.pdfIn PDF document text
    • http://wudazex.sportsontheweb.net/wofisapipifupikoguxa.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/how_to_change_oil_on_honda_mower.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449614/normal_603b5301d657d.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/what_is_continuous_and_discontinuous_edge_in_slab.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/figurative_language_dalam_puisi_the_road_not_taken.pdfIn PDF document text
    • http://luwinilulurop.mywebcommunity.org/what_are_the_four_different_types_of_writing_in_the_old_testament.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501654/normal_5fd93a4a687d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://safedoguno.onlinewebshop.net/20514444562.pdfIn PDF document text
    • http://vajapojaperusu.myartsonline.com/what_is_burger_sauce_made_of_uk.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA9 5520 bytes
SHA-256: b4e64e8f094720e2f9d8353c5cc253d310693cf10d8a52fdd301475e0b3de345
font_01_sfnt_off0000e172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE172 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 10292 bytes
SHA-256: 229b7189c53cc4a886164dd4961cd1e4cac6047d86f01387f7719202a9ba7f33
font_03_sfnt_off00010d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D74 16164 bytes
SHA-256: 4b52fd5da643d9c08cc0a86f773b2f024e3274f3f861dfcac100db1ef433cf06