Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff4877b678c2ce5…

MALICIOUS

PDF

66.9 KB Created: 2021-02-26 15:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 36fee5e952b890c351c88d4ce3964e2e SHA-1: 5462fcd1ae0a58b19910f49d700e38c81ee4323d SHA-256: eff4877b678c2ce5b777f65da6e61b46cb3fe93470dfe17392e067a44350ee37
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://golowaki.ru/strik?utm_term=wordly+wise+3000+book+8+lesson+5+word+list PDF link annotation
    • http://tijudozi.scienceontheweb.net/how_to_bypass_alarm_zone_adt.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/dFia8pH/regitajopeza.pdfIn PDF document text
    • http://wusodopepufex.66ghz.com/zoxafibijutomel.pdfIn PDF document text
    • http://xevivaxipime.22web.org/xexub.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/best_printable_heat_transfer_vinyl_uk.pdfIn PDF document text
    • http://firejowetawo.iblogger.org/69860374209.pdfIn PDF document text
    • https://cdn.sqhk.co/kimamena/0whe5Xv/gevojevesofefogoxapotone.pdfIn PDF document text
    • http://tinubovibiwiwi.iblogger.org/logo_quiz_answers_level_259.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/naroxetowapewifigafivowu.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/BvheOJ1/zenamagilokoberilokejemur.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/is_it_too_late_to_plant_tomatoes_in_florida.pdfIn PDF document text
    • http://tuwukadinem.mygamesonline.org/giwokadeza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robefopatobut.epizy.com/91026493095.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/16296396219.pdfIn PDF document text
    • http://tuxusar.epizy.com/92972615754.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/66617560594.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/21429590454.pdfIn PDF document text
    • http://kuwopugivowivo.rf.gd/poster_design_template_online.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_off0000ca79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA79 5644 bytes
SHA-256: 2e9e10952c8bd515b41e6267eef5fabad52555e7cf8473d46122a91d4f1ca3c4
font_01_sfnt_off0000dde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 9588 bytes
SHA-256: a06b60cc58afeb66af52ccec1674737da6199bb7d1ae1e5f29bb0eb030a46454