Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fe4a2166c166cc…

MALICIOUS

PDF

72.2 KB Created: 2021-03-04 09:39:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b26e76196d03fe08b3ce4269144fb962 SHA-1: b5eea57ade44149ee72ab8be3de68978c1f82dff SHA-256: e6fe4a2166c166cc0be1f4603560070ea144d057f5626ad458b0357a96b590f3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://resalured.ru/wix?keyword=science+fusion+grade+5+teacher+edition+pdf PDF link annotation
    • http://pevojatinolotej.22web.org/forged_in_fire_knives_to_buy.pdfIn PDF document text
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/0100199aaf549.pdfIn PDF document text
    • http://batmbatm.ru/kawaii_anime_girl_hairnj5x7.pdfIn PDF document text
    • http://tezijexipilimo.getenjoyment.net/xiginipunubi.pdfIn PDF document text
    • http://justiciaforjustice.com/boss_micro_br_80_drivermz3vc.pdfIn PDF document text
    • https://nejavolezi.weebly.com/uploads/1/3/4/0/134017816/gimesupenixuse_ritopasuzugezux.pdfIn PDF document text
    • https://vigajinid.weebly.com/uploads/1/3/4/8/134889024/3098267.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/ohio_common_core_standards_math_8th_grade.pdfIn PDF document text
    • http://xonigej.mypressonline.com/elenco_alimenti_fodmap.pdfIn PDF document text
    • https://zowuxebikazusi.weebly.com/uploads/1/3/4/6/134654267/cf031a.pdfIn PDF document text
    • https://jesaguxofugu.weebly.com/uploads/1/3/4/6/134659129/130629.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rigidafavubo.myartsonline.com/vafunelujokofezuwifekitu.pdfIn PDF document text
    • http://fujafinu.epizy.com/el_libro_de_jaser_en_espaol.pdfIn PDF document text
    • http://mobukug.myartsonline.com/samsung_galaxy_grand_prime_cover_case_bling.pdfIn PDF document text
    • http://zepotusetazokor.rf.gd/saeco_incanto_s_class_deluxe_espresso_machine.pdfIn PDF document text
    • http://sijisizaf.rf.gd/arduino_nano_usb_2._0_serial_driver.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_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 5612 bytes
SHA-256: ecaade80ef3a24eaf8c0199d25e393398c7c27b31710df732b5b659e6275a611
font_01_sfnt_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 10604 bytes
SHA-256: c1e867793a343cb11e72577a31f0ad185090020fcab2bddcc237651476703df9