Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d6a1612018a8a7…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 04:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3a654bfb914b2933e836f8e5fe766b97 SHA-1: 899d5f62df87e894737be9f5d86148d71847e605 SHA-256: c7d6a1612018a8a72846bad2849c147b7d2ebedcbd33c9db2e4481d7e798c99a
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://baarspo.ru/aws?utm_term=idiom+dictionary+free+download+for+android PDF link annotation
    • https://natedutaz.weebly.com/uploads/1/3/4/8/134850225/5616105.pdfIn PDF document text
    • https://fupakukenig.weebly.com/uploads/1/3/4/2/134234610/3891461.pdfIn PDF document text
    • https://cdn.sqhk.co/jexozumumanu/dRhdgjy/mountain_bike_tracks_near_me.pdfIn PDF document text
    • http://webmastervlad.ru/boxamemasevogexokuxew5t8fk.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwegamuvev/giLghgg/kajeguxemazasavur.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/ieifiij/business_management_course_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/mhGjjAx/85189292840.pdfIn PDF document text
    • http://marketitaly.info/samuel_beckett_waiting_for_godot_themesrfavf.pdfIn PDF document text
    • http://trackcreditscore.info/how_do_i_print_a_monthly_calendarno0ks.pdfIn PDF document text
    • http://gasorutika.iblogger.org/kabbalah_vk.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/Axatids/ludo_online_game_money.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/ghjhiwv/top_hits_2020_video_mix_clean_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dajajubofu.rf.gd/automation_studio_6._2_free_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/mazilitumominukejowativ.pdfIn PDF document text
    • http://morisexisaxewa.epizy.com/birthday_candles_photo.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_off0000dd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD86 5120 bytes
SHA-256: 157ce75d35752af6248a97f2486122b57f9b9ee90d402baee308c10a6af79816
font_01_sfnt_off0000eef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF6 10980 bytes
SHA-256: 475873db76fa68769f0c9296d19f5f9f406e5999872cc8434dbf86fbfe337976