Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca1e2a020951343…

MALICIOUS

PDF

105.6 KB Created: 2021-03-07 10:52:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45adcbfe19ff253571b6cf7b091e1bbc SHA-1: dee5872751bc96154096328acf36bc44e7fdd340 SHA-256: bca1e2a020951343c431121712c456516ec93113a1b26da5c11c0b8c5adf1f50
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to known malicious redirectors or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded links suggests an attempt to redirect the user to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://dafemum.ru/aws?utm_term=how+to+arch+text+in+vinylmaster+cut+4.0 In PDF document text
    • http://mkr-olimp.info/graco_fastaction_fold_click_connect_travel_system_base5wg1g.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/ngh3Egh/gmail_inbox_app_themes.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/4WiC7ii/luke_bryan_drink_a_beer_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/14968091666.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/nuxibule.pdfIn PDF document text
    • http://datujizid.iblogger.org/butterflies_episode_1_full_apk.pdfIn PDF document text
    • http://watomidipokaki.22web.org/nuwunefupamalufaki.pdfIn PDF document text
    • https://cdn.sqhk.co/gadapapar/WqDmgc1/44646208321.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/frUihKK/sefodonaposubusagilozap.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/armenian_alphabet_keyboard.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/horizon_zero_dawn_freeze_trial_guide.pdfIn PDF document text
    • http://totufozumad.iblogger.org/78187903947.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/matepurarozamozizi6pyxy.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/ragnarok_mobile_belmond_ellen_minstrel_answers.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/2b247d72-7b9e-47a8-9a89-5d000a131fbf/html_and_css_design_and_build_websites_by_jon_duckett_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5078a37-5cd0-4d89-802a-bc4e425c4c8c/the_oedipus_plays_of_sophocles_shmoop.pdfIn PDF document text
    • http://pudekixepubaz.epizy.com/gejojavapaxuwofimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ce002b-c909-498b-83f3-85905a84be0f/fomukunewapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d2c8b6-bf96-427b-a599-8c1b64ca62f9/57259110325.pdfIn PDF document text
    • http://nadiripu.epizy.com/eclipse_java_windows_8_64_bit.pdfIn PDF document text
    • http://gemixeferakin.rf.gd/viraxewotujaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70659ec-e89f-4972-8031-cc705e7d3126/how_to_connect_lg_bluetooth_headset_to_samsung.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_off000148d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148D1 5812 bytes
SHA-256: f4bed1eb1ada8d733541b5c781589fe5e663ab352db0358ff9465c3eb0360b5a
font_01_sfnt_off00015d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D3B 5584 bytes
SHA-256: 8d6c0e0d4bf53435289b1246e723b6c56640f32d169655cc8b79d56bec4a975e
font_02_sfnt_off0001702f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1702F 11824 bytes
SHA-256: ba4eb93ea31261dbcfb8676a49dbb87cc95d600af6cf7656ae13a004847e7c4f