Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e3dd54dd5391ee…

MALICIOUS

PDF

78.1 KB Created: 2021-05-08 19:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 01cd558023607b59b6405878e1261b56 SHA-1: dc49bbb4ead7970fbfd051788bed253f1722616a SHA-256: 45e3dd54dd5391eec2b09ce6b7a989868d08f5367582aea71c4bcd6189a4c59b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that redirects to a suspicious domain, likely intended to host malicious content or phish for credentials. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xajibur.ru/strik?utm_term=bruce+lee+song+lyrics PDF link annotation
    • http://frankiearvelo.com/hipotenusa_cateto_opuesto_y_cateto_adyacente_ejercicios3634a.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/R6gf3Sl/budegulidepugevu.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/mekunizukuwevederubip.pdfIn PDF document text
    • http://qwert-ita.fun/macbeth_act_3_scene_guide_quizletjxanv.pdfIn PDF document text
    • http://legiontry.online/14267321524ito7s.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/ig3Uuif/63421714454.pdfIn PDF document text
    • http://fasibada.22web.org/adjacency_matrix_template.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/Lhidgi7/dukekolufopajedozidapoluv.pdfIn PDF document text
    • https://cdn.sqhk.co/konosoka/jq50ih4/mimpi_melihat_orang_buang_air_besar_menurut_islam.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/konotibanoga.pdfIn PDF document text
    • http://muvipokikuwopek.22web.org/vozekadeponesemawumewazu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/da75d08d-d666-4c33-968a-53f8506c8ca3/how_long_is_the_bed_of_a_1999_ford_ranger.pdfIn PDF document text
    • http://lutepotazor.onlinewebshop.net/mugivom.pdfIn PDF document text
    • http://ritekarevo.rf.gd/74413380247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d736fdf-4f9e-46af-a5cc-1d6193aa279d/para_que_sirve_el_te_de_manzanilla_y_canela.pdfIn PDF document text
    • http://wenulusevikofa.myartsonline.com/cpwd_tender_document.pdfIn PDF document text
    • http://rakulewozagax.rf.gd/wufez.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/58154209838.pdfIn PDF document text
    • http://gevalej.epizy.com/nidesejilijapenigukog.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/jobform_aalborg_kommune.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/manualidades_halloween_4o_primaria.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/85048243859.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/active_and_passive_forms_konu_anlatm.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_off0000f4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AD 4908 bytes
SHA-256: f43a7ae8605d9f92d29affbd09bc09724676e1c47455f7fe4c2478f7731cedd6
font_01_sfnt_off0001057f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057F 11152 bytes
SHA-256: 700b14496420c6471ce126a5ec9992a61f743e5857857985946db0d666d28ecc

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