Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd55b9cf19b3ba94…

MALICIOUS

PDF

75.5 KB Created: 2021-03-14 10:36:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 998ef2e975eff7c7dbeebaa73f0242bf SHA-1: 2303263609f58516fa86f15fde54da086e8e1873 SHA-256: fd55b9cf19b3ba9474ba4c7b356db23e163cd24a957d9f985ede4b55b029d77b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain that appears to be part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'used toys long island', likely to trick users into visiting the malicious 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://xajibur.ru/strik?utm_term=where+to+donate+used+toys+long+island PDF link annotation
    • http://fasad-dom.site/how_to_heat_up_frozen_cooked_pastahi4te.pdfIn PDF document text
    • http://habirovradik.ru/miss_peregrine_series_goodreadsg7puy.pdfIn PDF document text
    • https://kavoxeta.weebly.com/uploads/1/3/5/3/135323229/parolofog_temabefuku_dofupixitadewu.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/jbiddjb/1997620705.pdfIn PDF document text
    • https://fuwewarudizikip.weebly.com/uploads/1/3/4/6/134644733/bakonuvabiru_mutalujefiwuj_wujetitufuri.pdfIn PDF document text
    • https://cdn.sqhk.co/fakolafebu/bkRzifN/11245271784.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvasovosew/F5chcrI/sojaborujekipelaba.pdfIn PDF document text
    • https://cdn.sqhk.co/jadilogivusa/88sigjf/69768350194.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/Vjbxk7v/gadimag.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/aambala_video_songs_hd_1080p_free.pdfIn PDF document text
    • http://kellys.space/levedakonugapadexc7xj.pdfIn PDF document text
    • https://lirurarupo.weebly.com/uploads/1/3/4/7/134770738/sowejux-ginela-ruzujiri.pdfIn PDF document text
    • http://luminar4-download.xyz/understanding_by_design_model_weaknessespbiaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rolozaj.epizy.com/7676847487.pdfIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_14c70d0be8b84a0aaf3001ab2aab3bb5.pdf?index=trueIn PDF document text
    • http://jadigilotuziwir.rf.gd/firefox_for_mac_app_store.pdfIn PDF document text
    • http://poxarow.epizy.com/43496722373.pdfIn PDF document text
    • https://22520ec4-2132-45a5-98b8-54db1b71d3ea.filesusr.com/ugd/b33b96_c078104a8d4f49278eab95e75dbb80d6.pdf?index=trueIn PDF document text
    • http://kotalozobazad.rf.gd/15853332171.pdfIn PDF document text
    • https://e590c0d9-b694-44fb-9862-47327b30d8b0.filesusr.com/ugd/89363e_2a3bddd607474d238c3d47ae8ea36c82.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90F 5204 bytes
SHA-256: 930571f07af35c28e05ce12d3adb6dd1520eded22c9a8f254254177386133a24
font_01_sfnt_off0000facd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACD 11108 bytes
SHA-256: d2afc8d52918c3ddedd8307ab9bce2270d3d9fc814c7520a94d7a88ca86217b5

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