Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6fbab543cdd5b1…

MALICIOUS

PDF

133.8 KB Created: 2021-04-18 05:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0203c6d03a4194b6b6c8f1037a78897f SHA-1: 38dd5ad7f41c0387a7f3088397e3cb6da5f1fde2 SHA-256: 1e6fbab543cdd5b1911ddf437eca5f1e03ac913c91f1f7df8a7ea9829ec95c21
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, indicative of a link farm or phishing attempt, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users with fake prize or delivery schemes. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/strik?utm_term=icewind+dale+enhanced+edition+achievement+guide
    • http://viniveba.mywebcommunity.org/brother_hl-5370dw_drum.pdf
    • https://cdn.sqhk.co/wujugojuse/tVxichh/barbershop_3_streaming.pdf
    • https://cdn.sqhk.co/gixotagokezu/TigCXgv/rescue_mission_roanoke_va_donations.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn.sqhk.co/kewebogi/jjhgha0/transformers_robots_in_disguise_combiner_force_ultra_bee.pdf
    • http://wutanumijejol.sportsontheweb.net/2014_chevy_malibu_led_lights.pdf
    • https://cdn.sqhk.co/bixatavafut/euji3gj/westerville_music_and_arts_festival_2019_hours.pdf
    • http://worabipupe.mypressonline.com/muzilovotavu.pdf
    • http://trujillostacoshop.com/cosco_car_seat_base_installationo2bbi.pdf
    • http://vuletotam.scienceontheweb.net/alcoholismo_en_adolescencia.pdf
    • https://cdn.sqhk.co/xenotami/ekihURK/ugandan_knuckles_adventure_game.pdf
    • https://cdn.sqhk.co/jalotenabo/crijcLK/gun_sounds_download_free.pdf
    • http://inscarusa.info/60733883184kcmpt.pdf
    • http://pibakulisup.medianewsonline.com/18658440354.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rabelame.atwebpages.com/oracle_sql_interview_questions_and_answers_for_freshers.pdf
    • http://kemesid.onlinewebshop.net/mahabharata_story_in_simple_english.pdf
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_48f3593f5407453583b75a6d8e9814a0.pdf?index=true
    • https://eae06886-2bd4-4ea0-81b7-592f12109715.filesusr.com/ugd/738632_f03f33398b68400291d743ac64df3693.pdf?index=true
    • https://af431a04-9ebc-4ea4-a98d-45e4ffbfad14.filesusr.com/ugd/485053_6323e9b6a10a4937831e305b602f5e7a.pdf?index=true
    • 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_off0001d186.bin
d502d8efc82b26bd32fd7cefc9fa166dc9ffe2f8b224327806e3fee088b37408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D186 5168 bytes
font_01_sfnt_off0001e30d.bin
a6eaec2dec086c32a24166133f50a9ee24539da649392f04d5e4a9d488ddf47d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E30D 11096 bytes

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