Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b3dbe9647a25fe…

MALICIOUS

PDF

113.6 KB Created: 2021-03-30 04:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0e6b7d6ac9dc8ec96409a5ba958781d6 SHA-1: df307eba4202c8db63ca982450d773e9615370cf SHA-256: 52b3dbe9647a25feda9c1964a3b8ec432a27cfa4507446f8529ba3ecffe211b5
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/123?utm_term=elfen+lied+ova PDF link annotation
    • https://sedeberelaniku.weebly.com/uploads/1/3/6/0/136030724/futujusoraveromuz.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/broad_spectrum_antibiotics_list.pdfIn PDF document text
    • https://togoxijagujeg.weebly.com/uploads/1/3/0/7/130775712/5addbec7.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/aUtKgc6/calendar_2020_printable_with_holidays.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/hgz66ia/elder_scrolls_blades_switch_review_ign.pdfIn PDF document text
    • https://rofasaxoropop.weebly.com/uploads/1/3/5/3/135316675/7874295.pdfIn PDF document text
    • https://metuliwilive.weebly.com/uploads/1/3/4/3/134386481/fusewulexikenixuge.pdfIn PDF document text
    • https://mesopivupezuna.weebly.com/uploads/1/3/5/3/135311967/a8c83242b.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/f651qgf/zamenedametotebive.pdfIn PDF document text
    • https://cdn.sqhk.co/dijexovesaf/t8icija/tower_defence_games_play_online_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/falejogajir/constitution_day_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/motorola_radio_accessories_houston.pdfIn PDF document text
    • http://zepuwiz.atwebpages.com/use_of_articles_download.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/smash_bros_everyone_is_here_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/jurebumabojarewizovejir.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/characteristics_of_useful_information.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/lapefaxedetevolor.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/automotive_sales_business_plan_template_for_small_businesses.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/85013745291.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/how_to_create_a_freeze_frame_in_premiere_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/chemistry_for_dummies_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/17011264342.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/what_are_the_commands_in_command_prompt.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_off0001495a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1495A 16976 bytes
SHA-256: 5179e5339dfb4634efdf124dc5ec91a44074c2a0ab9966d750b6ef106c4982a8
font_01_sfnt_off000180c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180C0 4644 bytes
SHA-256: fa2d9fedbf171ba42514cd71e4abd80e650f1ea03e691eadebeb0a2715d7b1b3
font_02_sfnt_off000190ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190AD 11808 bytes
SHA-256: ea8a85c7717ad18a6879ab00b41899d07296aca26c8ce7ea8d67936a3ddb688c

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