Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5dc69464d64fd85…

MALICIOUS

PDF

67.2 KB Created: 2021-03-13 13:14:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d6d659d85cdf2a8e87e59cde74cf097a SHA-1: 946da829bf1ead3bc9b2116015971fa9dd43c275 SHA-256: e5dc69464d64fd856d2fac2c5f8f07347bb2fc2e232b9ac1a5b99fba74df73b4
166 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. It contains numerous external URIs and is identified as a link farm, suggesting a phishing or malware distribution attempt. The presence of 'cmd.pdf' in the document text indicates potential command execution, likely to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jumiwimov.ru/wix?keyword=sarah+jayne+blakemore+twitter PDF link annotation
    • https://cdn.sqhk.co/moxibusas/eHUTJQX/gun_sound_effects_library.pdfIn PDF document text
    • https://cdn.sqhk.co/lapitobexeva/hagcIji/baby_arctic_wolf_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvajuvewuj/gHghgjY/chameleon_run_deluxe_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/geQjbA8/3203605703.pdfIn PDF document text
    • https://jipujiro.weebly.com/uploads/1/3/1/0/131069764/dovabinav-pokepibebelojan.pdfIn PDF document text
    • https://cdn.sqhk.co/dogatefi/aJjdijj/83581297667.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/star_wars_the_force_awakens_movie_script.pdfIn PDF document text
    • https://zoditasus.weebly.com/uploads/1/3/4/6/134670667/viwobi.pdfIn PDF document text
    • https://fimulumalopa.weebly.com/uploads/1/3/5/3/135326017/67d9e0.pdfIn PDF document text
    • https://zosagejezigim.weebly.com/uploads/1/3/4/7/134709887/xuburidutivaleb_tuboloxuxus_pevonutepux_nexize.pdfIn PDF document text
    • http://baderezu.scienceontheweb.net/echo_username_in_cmd.pdfIn PDF document text
    • http://item-mask.top/identifying_place_value_worksheets_5th_grade2ajbx.pdfIn PDF document text
    • https://rukuzidin.weebly.com/uploads/1/3/4/5/134517246/6849331.pdfIn macro / runtime command snippet
    • http://xakidofe.sportsontheweb.net/atlas_of_human_anatomy_for_the_artist_portugues.pdfIn PDF document text
    • http://copyrightsupport-ig.com/the_weeknd_trilogy_download_zip79h66.pdfIn PDF document text
    • http://item-mask.top/identifying_place_value_worksheIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/130c50f4-dd34-48d5-ae12-034cbf3ffc85/96058507879.pdfIn PDF document text
    • http://pizenusogusu.atwebpages.com/prefix_and_suffix_worksheets_for_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c071e94-91a6-4a5e-8f40-b0849686d2bd/jolidapobosixatuvoxan.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/cbse_sample_paper_2020_class_10_science.pdfIn PDF document text
    • http://widifusi.myartsonline.com/behavioural_economics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01013633-031b-4e0b-9048-319a08767e86/56599372341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39ab62a-8b1a-4697-85a1-eb8a151bed48/how_to_get_started_with_digital_art_by_dami_lee.pdfIn PDF document text
    • http://lixugafepujijoj.onlinewebshop.net/66717771037.pdfIn PDF document text
    • http://manuwakagekewu.onlinewebshop.net/8_steps_in_ethical_decision_making_model.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56ac1987-58f6-4c99-8f05-26536c639b5c/hobart_n50_mixer_parts_manual.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_off0000ccd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD1 5324 bytes
SHA-256: 2b6c09a9e68cb6e24c5fd86c16d062a48e26f65191851ba7bbf32374fe2637dc
font_01_sfnt_off0000dedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDB 9056 bytes
SHA-256: f94f2a80ec8a3d18590fbe70d05ad7aaae6f209c4c7a78734c735241b0a0d0b9