Malicious PDF — malware analysis report

Static analysis result for SHA-256 11143d888256e46f…

MALICIOUS

PDF

84.2 KB Created: 2021-03-18 02:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 762013794f26192dd6e04faa8554ce25 SHA-1: 231eacbe7fc0f63addf177f65b567a3b54808090 SHA-256: 11143d888256e46f8345394f5072197e9f9516d906d6aba4e2f5a6831d8ec0bb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'dafemum.ru' suggests the document is designed to redirect users to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/wix?keyword=private+prisons+pros+and+cons+statistics
    • https://cdn.sqhk.co/xisofofumew/4jiNiiF/29069860615.pdf
    • http://volanorirabu.22web.org/lajujopewozatawugo.pdf
    • http://vozajomaralamer.mygamesonline.org/24543563737.pdf
    • http://gisoboxizaza.mygamesonline.org/risd_school_calendar_roswell_nm.pdf
    • http://7gusevshop.website/lotenabovawaridogexrk9b7.pdf
    • http://vurimujud.iblogger.org/fender_mustang_amp_v2_software.pdf
    • https://cdn.sqhk.co/jozopotuwomo/cQgigPq/arcgis_earth_1._10_free_download.pdf
    • http://nebo-baikala.ru/307086876bsuah.pdf
    • http://homiak.fun/hello_piggy_scary_rblx_chapter_1dntat.pdf
    • http://gafisisaru.22web.org/kingdom_tv_show_episode_guide.pdf
    • https://cdn.sqhk.co/naziwixolagu/felhjBB/tibisaxutegepusot.pdf
    • https://cdn.sqhk.co/mevutaxisut/gdhceNY/10_day_smoothie_diet.pdf
    • http://skywonder.space/what_is_the_symbolism_of_the_cruciblej44nf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://disozisujenat.epizy.com/2656006955.pdf
    • https://s3.amazonaws.com/safago/fisorini.pdf
    • http://kelujisulajow.rf.gd/2831050362.pdf
    • http://jokubamobivavum.onlinewebshop.net/75826964999.pdf
    • http://rovuritag.rf.gd/bootstrap_responsive_templates_free_admin.pdf
    • http://lojibovel.myartsonline.com/black_and_decker_bread_maker_pizza_dough_with_beer.pdf
    • http://subezonaziw.rf.gd/clicker_garage_door_manual.pdf
    • http://veziledijiv.rf.gd/lowercase_letter_assessment_sheet.pdf
    • https://s3.amazonaws.com/kawotexulozax/20608554601.pdf
    • http://fedubumisuvek.epizy.com/best_stephen_king_movies_2019.pdf
    • http://jozabepatu.rf.gd/xevisaba.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c1d.bin
9d246916d382d753917efd7ca4a3c27d329db20e0e9c6dc0a5daedd765e0b0f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C1D 5096 bytes
font_01_sfnt_off00011d87.bin
d97b89e2643b26375b857d3fd489e1154d55b3a96facb4dd8d5b2cbb98ed6475
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D87 11060 bytes