Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b54f5dd9d7cc884…

MALICIOUS

PDF

74.2 KB Created: 2021-01-20 09:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1bc14fa1f5f5320e71fa04bd5928fde9 SHA-1: eeffd056146182ca74223134934ef4d67ad8ae46 SHA-256: 5b54f5dd9d7cc884c532dd55ef602a4ca253ed3e1177b3cffc70425b8626ec4e
184 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://traffking.ru/123?utm_term=soccer+star+cheat+code'. The document body, though heavily obfuscated, suggests a lure related to 'soccer star cheat code'. The presence of multiple disposable domains and link farms further indicates a phishing or redirection campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=soccer+star+cheat+code In PDF document text
    • https://cdn.sqhk.co/jisepozidis/ehiFjhP/womevemujanad.pdfIn PDF document text
    • https://nudusomezuriful.weebly.com/uploads/1/3/5/3/135387444/2c40b.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/iegdhgm/2020_college_football_schedule_excel_spreadsheet.pdfIn PDF document text
    • https://site-1178049.mozfiles.com/files/1178049/face_changer_software_free_download_for_pc.pdfIn PDF document text
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/9cedaa3a67e16a6.pdfIn PDF document text
    • https://bawusazatodopam.weebly.com/uploads/1/3/1/3/131378774/nidiwapog-gofuze.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvomafoda/sQjhiaM/warhammer_40._000_space_wolf_switch_test.pdfIn PDF document text
    • https://site-1255879.mozfiles.com/files/1255879/notary_public_acknowledgement_template.pdfIn PDF document text
    • https://site-1177236.mozfiles.com/files/1177236/displacement_vector_calculator_3d.pdfIn PDF document text
    • https://faliroralomi.weebly.com/uploads/1/3/0/8/130874474/vikiwe_nawuki_ribudobatuxefug_virenupufokipek.pdfIn PDF document text
    • https://xadajosawot.weebly.com/uploads/1/3/1/6/131636584/wodovoxomiw-depazuvajowib.pdfIn PDF document text
    • https://site-1174086.mozfiles.com/files/1174086/wefomubilogodidujudox.pdfIn PDF document text
    • https://nabesoke.weebly.com/uploads/1/3/4/0/134042749/1ee9bfdab7c8c43.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pagupim.epizy.com/seventh_day_adventist_church_bible_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/curso_de_arquitectura_de_software.pdfIn PDF document text
    • http://ruvatarojamun.rf.gd/39501854170.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/what_is_worksheet_in_ms_excel.pdfIn PDF document text
    • http://luxixeg.epizy.com/9636378792.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_off0000e378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE378 5100 bytes
SHA-256: 69edcc2fbfe75e54f0ccf46ef403406c26f35af42c4d7cc640745eed2b9e7feb
font_01_sfnt_off0000f4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C4 10992 bytes
SHA-256: 87fe8828a42d8b0c6171da7e4fb882b99d1a972552ef4100b4701f2e00b811f4

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