Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf47d0d10036458…

MALICIOUS

PDF

79.0 KB Created: 2021-03-16 20:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb505fc8c7b8297fe548653ce73e4130 SHA-1: 88cee32bf02056df9d79ae8d15935648c9604d56 SHA-256: 7cf47d0d100364584b5d951d74f167fabb0d3014599171824a6b73062001c408
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to 'big lots queen bed sheets', likely intended to trick users into visiting the malicious URL for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/123?utm_term=big+lots+queen+bed+sheets
    • http://kipokefurur.mygamesonline.org/39432342138.pdf
    • http://gojavodevagajuw.mygamesonline.org/can_you_remarry_after_divorce_scripture.pdf
    • http://tujubafi.getenjoyment.net/apostila_para_aula_de_violo_em.pdf
    • http://vopugixeroramox.medianewsonline.com/xasivagipagewimaganefuvav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vebisop/58350416322.pdf
    • http://babefuv.epizy.com/clue_the_board_game_check-_off_sheet.pdf
    • http://zisukuvi.atwebpages.com/la_dialectica_materialista.pdf
    • http://maxuluxusit.atwebpages.com/pafemirokunupokojezaw.pdf
    • http://jetotajasavesi.atwebpages.com/descargar_musica_de_zacarias_ferreira_adios_chica_de_mi_barrio.pdf
    • http://wivovazu.epizy.com/a2_english_vocabulary_test.pdf
    • https://s3.amazonaws.com/jiwisi/55915397254.pdf
    • http://sokevojufepizi.rf.gd/is_river_runs_red_based_on_a_true_story.pdf
    • https://uploads.strikinglycdn.com/files/9d5524a4-9a8c-4227-8eaf-ee863037c7f1/interview_with_the_vampire_claudias_cuts_her_hair.pdf
    • https://s3.amazonaws.com/sorapobuk/rock_band_4_drums_midi.pdf
    • http://kofepiropi.onlinewebshop.net/mawezokukeloporig.pdf
    • https://s3.amazonaws.com/kevava/dark_dimension_marvel_strike_force_guide.pdf
    • https://uploads.strikinglycdn.com/files/83b5ba1d-4a5c-4977-9705-babcaad4c638/kesetaw.pdf
    • https://s3.amazonaws.com/wulotugadag/47608810691.pdf
    • https://s3.amazonaws.com/kovezodepugov/feloduvijewejefi.pdf
    • https://s3.amazonaws.com/ligole/bajirao_mastani_hd_movie_openload.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_off0000f578.bin
1296761fc3700256ebca98901f213b1ff4a55c853534e022ff6de9e8e029cd6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 5096 bytes
font_01_sfnt_off000106c1.bin
9814f94ddc40663228d36ae3cab69ce6f159eb1988795910aa50f8f72f4076f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106C1 11604 bytes

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