Malicious PDF — malware analysis report

Static analysis result for SHA-256 837254bddbd99727…

MALICIOUS

PDF

81.1 KB Created: 2021-03-04 22:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: eb3a9f314baa66524ba427a2a16dd1dd SHA-1: 669d32652d8298d1e7b2aae9a8ee07d617928d66 SHA-256: 837254bddbd99727d0a94ded5868bc53a3168e307c46d59e500022030059dbc3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://golowaki.ru/strik', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, suggests a theme related to data visualization, which is used to disguise the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=which+graph+to+use+for+continuous+data PDF link annotation
    • http://ihsteam.ru/594790501916pxc4.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/ezMjgSh/lovitimejizi.pdfIn PDF document text
    • https://cdn.sqhk.co/titukopano/ThfVKhe/soundboard_among_us_mp3_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405907/normal_6011b763afd9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490265/normal_5fed8fd5babed.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/chsyK9T/edmodo_class_code_list.pdfIn PDF document text
    • http://bandalet.club/guild_wars_2_thief_guide_2019gvxl3.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/5hjjcgh/naxeex_superhero_game_download_for_windows_7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425728/normal_5fe56ec68044e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jadupapobixe.epizy.com/adobe_photoshop_latest_version_free_pc.pdfIn PDF document text
    • http://mujedofagogi.epizy.com/cimatron_e13_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195cf814-cb79-471c-9b12-475425c004e6/mazotipuka.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/baradari_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/13529397034.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/arduino_mega_2560_r3_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5065c176-0b2b-47d1-b8bf-9e874a8f33dc/viferifitewisojamanojiju.pdfIn PDF document text
    • http://sagibuwixuka.epizy.com/how_to_clean_new_keurig_mini_coffee_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0404a48-c3df-44a8-a3e1-e4fa83ab4dcf/36926971139.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/vebewomera.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/77695054676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b89b30-5583-4fc8-b9c1-45f64342dbcf/odessa_file_ny_obituaries.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45c4784-6e9d-4f62-adbd-1503593dbfb3/big_nate_books_release_dates.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_off0000f2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A0 5280 bytes
SHA-256: 5acba42e82fa67e8c3b1b05032d943ea3389fb6f5dc351cf7af449a229b59c14
font_01_sfnt_off0001049b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1049B 10576 bytes
SHA-256: d62f5c2fb662d503d5bbcf5e9d9d030e53c6e4bfe0fbb6c4d54e40505255583c
font_02_sfnt_off000128d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.