Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd26ef47f910433…

MALICIOUS

PDF

70.6 KB Created: 2021-03-08 16:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d820d19c76cc2554afde884707ee9b78 SHA-1: 77e0e7768d539b2b872ed3dce145073056cdeb81 SHA-256: ffd26ef47f91043364a92715973460fa02610dbba63ba398fda10ef0b3649ab6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. The document body, though heavily obfuscated, appears to contain text related to unit conversion, which is likely a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/strik?utm_term=cuantos+son+30+metros+cuadrados+en+cent%25C3%25ADmetros+cuadrados PDF link annotation
    • http://faripofijukevom.mywebcommunity.org/excel_spreadsheet_templates_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bebiwamulanu/836hegc/creative_cv_template_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowizaso/hgxzkPu/mdanderson_cancer_center_login.pdfIn PDF document text
    • https://cdn.sqhk.co/posogamumut/cdzhfgd/wagezupam.pdfIn PDF document text
    • http://tedurelaseji.mygamesonline.org/lileromipukozerulejiduwo.pdfIn PDF document text
    • http://zofekapa.iblogger.org/39496848813.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/mass_rmv_road_test_book.pdfIn PDF document text
    • http://gapewikegolunop.iblogger.org/where_did_forrest_fenn_wish_to_die.pdfIn PDF document text
    • http://vevufilusik.scienceontheweb.net/mappa_cefal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_32d172d773bb4890814ad80968269a2d.pdf?index=trueIn PDF document text
    • http://nopizimexid.rf.gd/one_punch_man_characters_garou.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/jubotav.pdfIn PDF document text
    • http://boxijekew.atwebpages.com/zefisumirofuwiwitako.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/lurujuwuzig.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/best_free_animated_wallpaper_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/movie_streaming_apps_for_android_tv_box.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/fixed_income_mathematics_fabozzi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/78590293913.pdfIn PDF document text
    • https://ddd90330-5837-4e0c-b2f6-9383941cd2db.filesusr.com/ugd/568e2c_18c900e6eb9a49419339ded66ff73b5a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/guxosa/nise_control_systems_engineering_6th_ed_solutions.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_off0000d4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FB 5320 bytes
SHA-256: b0a38f22798e690ca37559b481a6eb6d68669768fb97af4a6ceb0ae300ce6aa0
font_01_sfnt_off0000e6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F0 10884 bytes
SHA-256: 606d7e78062c6544c9a429933d4b63fa0abc9e1db36f3dc9d6bb9d2381e73f57

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