Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1014e6a73df3611…

MALICIOUS

PDF

84.2 KB Created: 2021-03-10 15:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d83b85d205c25713a2706d1c9b22bb6a SHA-1: 74049ebdb3419f97dc9ca5ed77e0830ec32576ba SHA-256: a1014e6a73df361119dcfe637c773af0363259b73e463de2104fb1f3a6f8c9e3
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The primary URL, https://soxebez.ru/wix?keyword=khach+san+bien+my+khe+da+nang, is likely part of this scheme. No scripts were extracted, but the PDF structure and link farm indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=khach+san+bien+my+khe+da+nang PDF link annotation
    • https://fanuterose.weebly.com/uploads/1/3/3/9/133999321/9708313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460465/normal_600acf35bb437.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491723/normal_5fc9da81328da.pdfIn PDF document text
    • https://saworajopasu.weebly.com/uploads/1/3/0/7/130775294/1262907.pdfIn PDF document text
    • https://mosezusimoz.weebly.com/uploads/1/3/1/6/131637881/2cf159b7d.pdfIn PDF document text
    • https://rowafitiw.weebly.com/uploads/1/3/4/6/134608100/womisalovog.pdfIn PDF document text
    • http://begiguvok.iblogger.org/la_metamorfosis_franz_kafka_frases.pdfIn PDF document text
    • http://gigewaxupupixe.22web.org/identifying_independent_and_dependent_variables_answer_key.pdfIn PDF document text
    • https://lelamibi.weebly.com/uploads/1/3/0/7/130738841/govamoluleziwob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392463/normal_6003796b9e159.pdfIn PDF document text
    • https://wigitofeza.weebly.com/uploads/1/3/2/6/132682623/114648.pdfIn PDF document text
    • https://rifezapolufopit.weebly.com/uploads/1/3/5/3/135316727/piwebivunifitefoja.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/3932883.pdfIn PDF document text
    • http://givepamodugag.22web.org/google_play_services_lollipop_apkpure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464529/normal_601cf9c147a9f.pdfIn PDF document text
    • http://liniwugo.iblogger.org/xakubebave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496853/normal_6042c538c9761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wukosow.epizy.com/adblock_firefox_48_mac.pdfIn PDF document text
    • http://zinowor.epizy.com/tv_guide_usa_nba.pdfIn PDF document text
    • http://timekexewug.epizy.com/enriques_journey_summary_chapter_7.pdfIn PDF document text
    • http://duxupupin.epizy.com/comparing_similar_fractions_worksheet.pdfIn PDF document text
    • http://mujedofagogi.epizy.com/3180895639.pdfIn PDF document text
    • http://xetubuvij.rf.gd/47728866226.pdfIn PDF document text
    • http://punafifa.rf.gd/18778385377.pdfIn PDF document text
    • http://rojapaj.epizy.com/escape_room_app_level_116_answer.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_off0000fb1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1A 5500 bytes
SHA-256: 87de43ab6ca3c70196401a47252e261fb5291dbda878ac5109c6e07badd94b6d
font_01_sfnt_off00010db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB3 19080 bytes
SHA-256: ba6d27c3ca9d6c2a45b9c3d015ca509f22f8caa6d89bd56d231f89f0b2c13214