Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef6e441d2ffc9fb…

MALICIOUS

PDF

76.8 KB Created: 2021-03-11 18:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d3025203db5aaec1e4f1579ed8fdc00d SHA-1: 52924ae3d5c0aed43f4a4eda039b6cd5e7451262 SHA-256: bef6e441d2ffc9fb9a325d820b53e1d38671e0c838d95d65711af988beecbc87
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting, and a heuristic specifically flags it as a link farm. The presence of a 'download button' lure further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=spotify+premium+apk+offline+mode+ios PDF link annotation
    • https://cdn.sqhk.co/vozevadijut/Xjhichj/homemade_raspberry_jam_no_sugar.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/ykjEUhd/slide_away_video_with_lyrics.pdfIn PDF document text
    • http://fuzubijixulux.mygamesonline.org/how_to_burn_wheel_in_automatic.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468563/normal_6002b2282abec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_5fdac8abd41f4.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/whcPej9/kavezumuduziluv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371809/normal_600379561b671.pdfIn PDF document text
    • https://cdn.sqhk.co/revujinarewu/lzl6aic/dino_city_rampage_3ds_metacritic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_600fd82dba3c5.pdfIn PDF document text
    • https://cdn.sqhk.co/kofelejezem/Ipghhh9/51144961755.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/how_fast_is_a_model_3_dual_motor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414852/normal_601ab0689a634.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/jhdlnge/laneige_fresh_calming_trial_kit_how_to_use.pdfIn PDF document text
    • https://cdn.sqhk.co/divekezor/khcjgoO/airport_ground_operations_job_description.pdfIn PDF document text
    • https://cdn.sqhk.co/tijaxasazuwi/1Eia3gh/bubble_shooter_legend_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/gfgFvgi/level_15_9x9_flow_free_bridges_pack.pdfIn PDF document text
    • http://wixosefimaba.scienceontheweb.net/m-audio_oxygen_49_3rd_gen_power_supply.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/fadedosi/91624406042.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/how_to_get_a_cottage_food_permit_in_alabama.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/vatoxasatuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/email_template_builder_angular.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/jomoxidenuge.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/59906873198.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/pdf_to_cad_dwg_converter_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/address_block_format_letter.pdfIn PDF document text
    • http://forezepolutaju.onlinewebshop.net/mental_toughness_navy_seals.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF95 5456 bytes
SHA-256: 0aa8786b2c534454b71c4e316c8585b4642d2622d3ebcaa78e942ea05236c893
font_01_sfnt_off00010218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10218 10412 bytes
SHA-256: 0c7a698bbea3022aa237c452dbde9edd8e1a56db792af196b1c9bc24b75d45e3