Malicious PDF — malware analysis report

Static analysis result for SHA-256 3154e263d52a06aa…

MALICIOUS

PDF

71.4 KB Created: 2021-05-09 09:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76f56b359cd6b0b63db03cb56126ddd5 SHA-1: edccd81c3d5f2f0e34ef82e446a161a81904c822 SHA-256: 3154e263d52a06aa4b945b7a4e9f87380d9fc5cb29012f2029671cd4c201330c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/strik?utm_term=dewalt+dw744+type+3+motor
    • https://cdn.sqhk.co/pemenodisoda/jSKbhda/81817259203.pdf
    • http://hd-cam-mirror-up1.club/balanced_scorecard_template_xlsf821k.pdf
    • https://cdn-cms.f-static.net/uploads/4368501/normal_6041c780dc98b.pdf
    • http://martakkord.ru/31338715079ojt32.pdf
    • https://static.s123-cdn-static.com/uploads/4448550/normal_5fcf247392f73.pdf
    • http://luxuwum.mypressonline.com/encyclopedia_career_book_download.pdf
    • http://zakomuxoza.getenjoyment.net/autoclave_all_american_25x.pdf
    • http://girlsbeach.space/creature_full_movie_300mb1rfcd.pdf
    • https://cdn.sqhk.co/lexoxuxoluvi/jfw6Ijf/51149534972.pdf
    • http://lnstgramhelpcopyright.com/the_wait_book_freei4uv9.pdf
    • http://fodefon.getenjoyment.net/alkaline_food_chart.pdf
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5fd7783723b59.pdf
    • https://cdn-cms.f-static.net/uploads/4473926/normal_6057b3b8b2245.pdf
    • https://cdn.sqhk.co/wifilivemij/im0hcSr/91050214015.pdf
    • https://cdn.sqhk.co/torujazelome/hificjf/68126810788.pdf
    • http://giftcard-sale.store/mafebevexuzifutetigex2m31e.pdf
    • https://cdn-cms.f-static.net/uploads/4464070/normal_603ef109055d3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lakadutof/how_to_make_a_simple_flying_drone_at_home.pdf
    • https://s3.amazonaws.com/garorowa/answering_meaning_in_gujarati.pdf
    • https://s3.amazonaws.com/xajowu/samsung_service_menu_codes.pdf
    • http://somifisuvukibuk.onlinewebshop.net/site_analysis_report.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_off0000d835.bin
4ef09a452b359b60e30c4de9f4dae94f48edbb892f1ba95b7de61b25448357e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD835 5452 bytes
font_01_sfnt_off0000eadd.bin
1cd7339cd49e566c4f9aa08d597990b385a6f8dcb113954785aa16ba4742c6d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEADD 10996 bytes