Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3d28971d3695cd…

MALICIOUS

PDF

74.5 KB Created: 2021-04-05 12:54:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cb8fdd5687458550c63eeca2d78ee0b8 SHA-1: 692f4227d3681a5aff5f2d5f91636b417c5bc435 SHA-256: 0d3d28971d3695cdc4f878a3ee944ce51bce33c5efe63879b6aa510561da987d
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristic detections indicating it is a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, suggests a lure related to 'active and passive voice pdf exercises with answers', directing users to a suspicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=active+and+passive+voice+pdf+exercises+with+answers PDF link annotation
    • https://wixalotoduf.weebly.com/uploads/1/3/5/3/135305273/e7a07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452626/normal_5ffe20542db05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_60219dd654e4f.pdfIn PDF document text
    • http://fevevafo.medianewsonline.com/building_house_process.pdfIn PDF document text
    • https://sexozubo.weebly.com/uploads/1/3/0/7/130740033/potojogezarero-nidadowinuzaf-ratipokixelu.pdfIn PDF document text
    • https://pudonaneguk.weebly.com/uploads/1/3/4/7/134767047/a0fdc7a.pdfIn PDF document text
    • http://vufajed.getenjoyment.net/canales_de_comercializacion.pdfIn PDF document text
    • https://lukogazusewof.weebly.com/uploads/1/3/4/6/134643336/kesilofew-kumupesofax-kokuxogexofus-nilix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483346/normal_605e037fc3290.pdfIn PDF document text
    • https://meliwajovogowuw.weebly.com/uploads/1/3/4/4/134481672/c301a8.pdfIn PDF document text
    • https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/848935cf.pdfIn PDF document text
    • https://nasuvanebi.weebly.com/uploads/1/3/5/3/135393195/bifugovapegabun_merixoridaxu_japolesabew_dikikavon.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/tadevewuju/aria_sopra_la_bergamasca_uccellini.pdfIn PDF document text
    • http://sufuzot.epizy.com/android_constraintlayout_group_visibility.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/zakazufarusiparezafa.pdfIn PDF document text
    • http://zagopemolal.rf.gd/android_os_update_support.pdfIn PDF document text
    • http://tipokeviti.atwebpages.com/zobedis.pdfIn PDF document text
    • http://duzebufulumaw.epizy.com/amazing_alex_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/womens_little_red_riding_hood_halloween_costumes.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/tojunawolapujojup.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/29242415118.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_off0000e36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36E 5420 bytes
SHA-256: b7b8ce66486c86cb9670bde97077c81ef1beeec56d881801c9d0c67032b106bc
font_01_sfnt_off0000f5f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F8 10756 bytes
SHA-256: c5d9870ff313201aaeca5da68df4609e7edc8349a185da306a5d5cc64815197a

Open this report in the interactive analyzer, or submit your own file for analysis.