Malicious PDF — malware analysis report

Static analysis result for SHA-256 122f568450545251…

MALICIOUS

PDF

74.7 KB Created: 2021-03-21 07:15:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 30dc85cd09f5cb53fa16c510dbb57bb6 SHA-1: 297b60a8f0821849d1f8b1fa7d228b013c6de32d SHA-256: 122f5684505452513f961ce5481f887b5bce4ad000556468b944ffdd00ef26bb
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which are hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to be related to 'forklift training test questions and answers', a common pretext for malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cdn-cms.f-static.net/uploads/4416493/normal_603f8ac952675.pdf In PDF document text
    • http://xunopapazugatar.medianewsonline.com/artritis_idiopatica_infantil.pdfIn PDF document text
    • http://zanartcc.net/adventureland_hours_tomorrowzk6cu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_6005a8c1af90b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fe7b8c265bc3.pdfIn PDF document text
    • http://fuwiduwoxobol.mygamesonline.org/aulani_resort_map.pdfIn PDF document text
    • http://giwitijudaleka.mygamesonline.org/77397221222.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/nebivikugolirasivudu.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/what_kind_of_belt_does_a_hoover_windtunnel_use.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/deer_predation_or_starvation_answer_key_quizlet.pdfIn PDF document text
    • http://xewosaxebojufir.iblogger.org/woboziligowapenasijotito.pdfIn PDF document text
    • http://fadewujetenuve.mywebcommunity.org/samsung_rf323tedbsr_aa_bottom_ice_maker_not_working.pdfIn PDF document text
    • http://repair-telefonov.ru/3982789724181eq6.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/how_to_ground_balance_a_garrett_ace_400.pdfIn PDF document text
    • http://arfesopt.com/96338358989s27st.pdfIn PDF document text
    • http://istlan.space/96514969654ufn6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_6051ae21dfccb.pdfIn PDF document text
    • http://xujadawowupu.scienceontheweb.net/tagufofipisobosetokexiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/G1IkLG9TFNM/wb?keyword=forklift%20training%20test%20questions%20and%20answers%20pdfPDF link annotation
    • http://gurabagoderes.atwebpages.com/vesitexaropegaxokadaz.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/atmosferas_peter_zumthor_descargar.pdfIn PDF document text
    • http://pudedenos.epizy.com/45914345049.pdfIn PDF document text
    • http://vonizevugopu.rf.gd/suxalemada.pdfIn PDF document text
    • http://mevexunimapo.epizy.com/9774748493.pdfIn PDF document text
    • http://tibutariwu.myartsonline.com/automobile_engineering_nptel.pdfIn PDF document text
    • http://sajatuvireguta.atwebpages.com/bifipowikozomosujuved.pdfIn PDF document text
    • http://benawezidimige.rf.gd/dr_john_c_maxwell_net_worth.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_off0000e043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE043 5444 bytes
SHA-256: 765defb7c333edd3d1544feca203046bb43ef7ac0ec12a01c9c5208af8f05eba
font_01_sfnt_off0000f2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EC 12264 bytes
SHA-256: 13b4e5c3d6df6e4834f6a08d59a9c3455f3eb3ca2d4d8a6ecb82bea2b6664b19

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