Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0418954f7225fb3…

MALICIOUS

PDF

78.7 KB Created: 2021-04-23 17:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bd24228e65683b3b03e6e670659ae8f2 SHA-1: bdeafc0e761a6aadac20d1397f5d1406ef39a09e SHA-256: b0418954f7225fb34fbe0efc17c55fcee16e68d523cccd2948ee90ffa524e3c3
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The presence of multiple disposable hosting domains further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/strik?utm_term=singer+4423+review+amazon PDF link annotation
    • http://funogager.22web.org/auriculothrapie_formation_tours.pdfIn PDF document text
    • http://xirapanagix.getenjoyment.net/21443909698.pdfIn PDF document text
    • https://nuvefozilif.weebly.com/uploads/1/3/4/7/134733792/zanisugubevesevobure.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/kotimizuzotil.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/widjhhi/58370231424.pdfIn PDF document text
    • https://tevaxekuronexo.weebly.com/uploads/1/3/4/6/134642130/1064496.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/fatiiic/74570797874.pdfIn PDF document text
    • https://cdn.sqhk.co/darojopul/ghjUNgf/khloe_kardashian_age.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/kabepafoj_tewudinanabini.pdfIn PDF document text
    • http://mudixefibewab.mywebcommunity.org/61157642118.pdfIn PDF document text
    • http://pivevawibe.iblogger.org/pearson_btec_applied_science_level_3.pdfIn PDF document text
    • http://tebiweja.iblogger.org/cheeky_cheeky_video_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zodejewab.epizy.com/kobebuwewika.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/92829048417.pdfIn PDF document text
    • http://loreloduvotopu.rf.gd/87032659303.pdfIn PDF document text
    • http://luneruletiz.rf.gd/96426095810.pdfIn PDF document text
    • http://mewozukejos.rf.gd/basic_household_budget_form.pdfIn PDF document text
    • http://lesupaj.epizy.com/cuantos_milimetros_caben_en_un_centimetro_cubico.pdfIn PDF document text
    • http://sezifusina.epizy.com/adding_ing_to_verbs_exercises.pdfIn PDF document text
    • http://texaliborobiko.epizy.com/acronis_true_image_2020_manual.pdfIn PDF document text
    • http://rififaroneg.rf.gd/weight_lifting_training.pdfIn PDF document text
    • http://guxajez.rf.gd/cartoon_car_games.pdfIn PDF document text
    • http://rolugume.rf.gd/cashless_banking_in_nigeria.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE826 5192 bytes
SHA-256: c07e849dc0140029e8fa1f1af5fb96847fa0e812a26d643eb09595ebf6f92d64
font_01_sfnt_off0000f9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C1 10932 bytes
SHA-256: 5f14192c23f69dac8fe4ebf3eb19031c829e46eec7d60b91557bbd3026e06d7d
font_02_sfnt_off00011eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EED 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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