Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a4184ad2086d58…

MALICIOUS

PDF

68.6 KB Created: 2021-02-18 15:17:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d4534cc8ac24831d28805107c3f6ba62 SHA-1: 3e854c90ffef853fe46b9bba212fbd8a00ef6d24 SHA-256: 40a4184ad2086d58e2c0e7f34d316e9bb57e3b0e48be51d748073158a0684411
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://bologen.ru/123?utm_term=how+to+do+a+daycare+business+plan PDF link annotation
    • https://gewujezugiwo.weebly.com/uploads/1/3/4/7/134754524/e4fb3ee3e6d746a.pdfIn PDF document text
    • http://buytoday.cc/how_much_does_it_cost_to_have_a_car_alarm_installedm4djs.pdfIn PDF document text
    • https://sumajodezidozi.weebly.com/uploads/1/3/3/9/133997227/5100416.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/m5EfVgh/alien_shooter_galaxy_attack_guide.pdfIn PDF document text
    • http://kasyanbeauty.com/messenger_ios_1162jy9.pdfIn PDF document text
    • https://cdn.sqhk.co/tajalawad/jjdhSkt/pamegefozuvamolejonogupu.pdfIn PDF document text
    • https://dururamud.weebly.com/uploads/1/3/4/8/134846475/zodabugofejir_lonajigul_fibebe.pdfIn PDF document text
    • http://ventager.online/twisted_tea_calories_half_and_half_cansm39t.pdfIn PDF document text
    • https://cdn.sqhk.co/vuramufef/YRnhAY0/tibubowuvarekenulub.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/childish_gambino_bonfire_free1a0zr.pdfIn PDF document text
    • http://amsidisi.xyz/difference_between_accommodations_and_modificationsuw18k.pdfIn PDF document text
    • https://cdn.sqhk.co/damapegapi/hfgexic/bbc_learn_spanish_with_free_online_lessons.pdfIn PDF document text
    • http://copyrightsupport-ig.com/how_to_clean_a_cuisinart_keurig_coffee_machinesg1cs.pdfIn PDF document text
    • https://zupuluduwiwafop.weebly.com/uploads/1/3/2/6/132681460/zonurajutoduje.pdfIn PDF document text
    • http://organic-ita.space/11130793226xgken.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cf48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF48 5364 bytes
SHA-256: 6eb8a1fd8c75a851ef76464663ca6e4d5b3a0ea6bbaf1bd6e634dc76dcd71bbf
font_01_sfnt_off0000e1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A1 10524 bytes
SHA-256: 4cc447c4ecba99389a3ddc0e13716f2fa168eb959923099057b955b3f48a86d2