Malicious PDF — malware analysis report

Static analysis result for SHA-256 affb7146b1bc9728…

MALICIOUS

PDF

79.1 KB Created: 2021-03-10 05:36:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 25ee68d2b7964c85e709f7d25670bafd SHA-1: bba517ffad93289e0551c8b793746c864a9510ac SHA-256: affb7146b1bc97287f30f9b11f3dd7b90e25fb24ce5a6d64d109b25a3aeb8e8d
134 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=how+to+make+virtual+trivia+fun PDF link annotation
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/b22f2.pdfIn PDF document text
    • http://getyourcredit.info/sidapenojimurolakerulitsuln5.pdfIn PDF document text
    • https://cdn.sqhk.co/beledufe/jfibhbt/17607798093.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/delta_monitor_shower_valve_repair_kit.pdfIn PDF document text
    • http://cryogen.me/cooks_country_cookbookybd07.pdfIn PDF document text
    • http://mifirejetevina.getenjoyment.net/kotter_1995._leading_change_why_transformation_efforts_fail._harvard_business_review.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/cjdjevC/suraxexit.pdfIn PDF document text
    • https://lavovozanu.weebly.com/uploads/1/3/0/7/130739022/1347824.pdfIn PDF document text
    • http://izzzaaa.space/blood_bowl_2_trophy_guide61oqb.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/64031194956.pdfIn PDF document text
    • https://tatuwimo.weebly.com/uploads/1/3/4/8/134882860/bibikudinakiribonax.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/87124137141.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/43726357684.pdfIn PDF document text
    • https://mufewikusa.weebly.com/uploads/1/3/4/0/134042586/3722022.pdfIn PDF document text
    • http://hookup158.fun/birthday_song_in_tamil_videok7m5g.pdfIn PDF document text
    • http://boomua.site/sulupubej27cn4.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/hdehc29/42019689950.pdfIn PDF document text
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/viluj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/neil_gaiman_sandman_series_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/cinema_hd_v2_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/weromoredebebajidem.pdfIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/gaxunogidize.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/how_to_remove_delonghi_infuser.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/95246804386.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/how_do_i_set_my_canon_printer_to_scan_to_my_computer.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_off0000f888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF888 4912 bytes
SHA-256: 715ab2c0ed91e85c43f1cf15a203feaec60921e1639621a4434d6265d1ad6590
font_01_sfnt_off0001093c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093C 10912 bytes
SHA-256: dd81de4351db556aff5c7cde429379782af49f7ff87539a28fbc2653db90b558

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