Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b25a47f7c6fc90c…

MALICIOUS

PDF

85.9 KB Created: 2021-02-19 13:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ce15322068696eab4e2e8be8fee36dbd SHA-1: 4bfa2b92b618dbc6b500db6d998d85a2e0242dbc SHA-256: 6b25a47f7c6fc90c6c1a1ede1d5bbc3dd29e2ea274fc3346a9a2782441c111e6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=crochet+scarf+patterns+free+uk PDF link annotation
    • https://cdn.sqhk.co/kobewudojuvo/hK9hjZ1/crazy_zombie_8_hacked_unblocked.pdfIn PDF document text
    • http://j3vnci4.xyz/throne_of_glass_audiobook_downloadobt2x.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/hljfjhm/lirik_lagu_big_bang_blue_dan_terjemahan.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/igNhgDk/kikaw.pdfIn PDF document text
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/duwuvimonubu-vodemoxipomurut-pafizifupekak-kavokogasudis.pdfIn PDF document text
    • http://chemistryplus.space/prototype_testingjegtr.pdfIn PDF document text
    • https://cdn.sqhk.co/zomuzuta/XZcageF/42698794927.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/Ejhg4z8/vedabubexaxovinevikepaw.pdfIn PDF document text
    • http://bnatural.space/jidigur75phc.pdfIn PDF document text
    • http://copyright-supporthelp.com/what_reading_level_is_the_prince_warriorsigoi7.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/Sif2V3N/sky_race_2020_color_balls_raceway.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxesojogugu/zhdFJij/jegerixutomovi.pdfIn PDF document text
    • http://nigasheff.xyz/8184055036140wgm.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/7642fe8c24e2fe.pdfIn PDF document text
    • https://mixunolonuwoja.weebly.com/uploads/1/3/0/9/130969204/buwanerigax-ridanov-wofupuvenix.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/bubodeliza/gezemafumugisapumon.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/30416772302.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/ctet_july_2019_answer_key_set_r.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_off0001147c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1147C 5040 bytes
SHA-256: a42e62baf2edbe871f3a72f038ca460c84b91fdd4d1b265d6ee12be8ced01aac
font_01_sfnt_off0001259e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1259E 10816 bytes
SHA-256: a4e76d5d8fdddd64bc2d104e3d910eab148322ac81f5efa2fa64d8e8e83ce426

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