Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff4afe5cd524ab1…

MALICIOUS

PDF

88.1 KB Created: 2021-03-20 11:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: aefbd83c0c668a1c3fa8aa59bfb365ea SHA-1: cc1aed4912979f19d5e2f1163e39e7e5e9c90c05 SHA-256: 7ff4afe5cd524ab1a60fd62be5bd9f63ecff811754cec6bd95b5884c11a0a169
146 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to 'Albania country information report'. The presence of numerous disposable domains and UTM parameters in the URLs indicates a phishing campaign aimed at driving traffic to potentially malicious sites. No scripts were extracted, but the overall structure and URL analysis strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gimoguvi.ru/123?utm_term=albania+country+information+report PDF link annotation
    • http://differencecheats.net/batokevarulilekagy9rex.pdfIn PDF document text
    • http://moscowflowers.shop/gatawumirorepipafiminuki0arjv.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/42599249035.pdfIn PDF document text
    • http://leadtop.co/funny_answer_for_how_are_you_doing32af9.pdfIn PDF document text
    • http://urologo.store/57959102103ojndl.pdfIn PDF document text
    • http://usmileofficial.site/carry_on_my_wayward_son_supernatural_finaleuhtyq.pdfIn PDF document text
    • http://mugukix.mygamesonline.org/nuloba.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/asking_for_permission_worksheet.pdfIn PDF document text
    • http://christinaanddavid2019.com/research_about_academic_performance_of_students3bpjn.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/windows_batch_file_reference_variable.pdfIn PDF document text
    • http://meetsoda.club/how_to_answer_a_good_reviewg58v0.pdfIn PDF document text
    • http://boterilutonesi.iblogger.org/bechem_avantin_361.pdfIn PDF document text
    • http://silver35.ru/kuriwugegujezi29.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/fotojipifuzitul/minecraft_buildcraft_mod_1._7_10.pdfIn PDF document text
    • http://madixosapajob.epizy.com/sumodetawitunepuxusexev.pdfIn PDF document text
    • http://tuvizida.rf.gd/kodizofiwewozidor.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/bokokakukekemoxivalobiw.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_off0001194f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194F 5212 bytes
SHA-256: 417cc661a893dfe113bb59dd43135ab6477537b10e1975a375fc87509576135f
font_01_sfnt_off00012b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B01 11312 bytes
SHA-256: 1fa04d20253d16ba922d81d7c9837df2eb9cdcdd457e0f52923c41aa747fb0ef

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