Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fbad7c3281ac741…

MALICIOUS

PDF

74.1 KB Created: 2021-02-05 07:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8d89eb3ce0a32cd725bb477c91ef491c SHA-1: c5eee64aff2a313a5d2af8616f05be0b9d13d23c SHA-256: 6fbad7c3281ac741a06c66fa723a136a03ba2265802006c0ebc08c16caa4c245
126 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains numerous external links, with at least one pointing to a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/wb?keyword=building%20construction%20illustrated%20francis%20ching%20pdf PDF link annotation
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/6423605.pdfIn PDF document text
    • http://rubisteq.online/rival_stars_college_football_tipssvfyp.pdfIn PDF document text
    • http://magnetfix.store/rudisetifovepejoreku3yue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458854/normal_5fe4a5be1d993.pdfIn PDF document text
    • https://nifirasevaxo.weebly.com/uploads/1/3/4/7/134756957/1013434.pdfIn PDF document text
    • http://idealica-it.website/59919861878aezzq.pdfIn PDF document text
    • http://1pokypki.website/meterpreter_android_hackgpf2e.pdfIn PDF document text
    • http://jodesomuxuduzu.22web.org/xedobuxevanowojixin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_6019d7bc55cbb.pdfIn PDF document text
    • http://natikolom.site/emulador_nintendo_64_apkp4wf3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401973/normal_5feeeececba8b.pdfIn PDF document text
    • http://dreabling.online/wofupukupufapiluklkzxq.pdfIn PDF document text
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/lulepixililozuki.pdfIn PDF document text
    • http://exclusmxpn.com/43585896755x09af.pdfIn PDF document text
    • http://afracheat6.xyz/vupajutznfxj.pdfIn PDF document text
    • https://sofamilases.weebly.com/uploads/1/3/5/4/135401016/vorozi.pdfIn PDF document text
    • http://qwert-ita.fun/telangana_traffic_challan_app6z0rd.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/jumedemimo/fagapofidadikinakimajan.pdfIn PDF document text
    • http://rigetimidolofok.rf.gd/bhole_baba_ka_bhakti_gana.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/6299411579.pdfIn PDF document text
    • http://sasotogatajuxiw.rf.gd/employee_retention_cipd_factsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/trijicon_acog_ta31rco_a4_manual.pdfIn PDF document text
    • http://sosewovitifofus.epizy.com/context_clues_using_synonyms_worksheets.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_off0000e31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31B 5468 bytes
SHA-256: ddf39806ab91f2e57df8031e5760ce575f9a80dd7bb79b36f65c60b21da949d3
font_01_sfnt_off0000f5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B6 10732 bytes
SHA-256: e1b3f5464030855b3149628b9b1782508216137486c2ff2204cd4841361290b4

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