Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14b386fe9da0b70…

MALICIOUS

PDF

77.7 KB Created: 2021-04-01 19:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c5320078f9042fec1c59bde8965ddb39 SHA-1: f6c996c73356dcb4a2c61d80592fbf4565d68aba SHA-256: e14b386fe9da0b707bb0458b2aaeeb3d5a55329b356ac8c7cec667ae9878e70f
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The embedded document body, though heavily obfuscated, appears to be a lure related to a 'birth by sleep aqua melding guide'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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://dugedepap.ru/wix?keyword=birth+by+sleep+aqua+melding+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384308/normal_602c1d5036d6c.pdfIn PDF document text
    • https://pugixodazujok.weebly.com/uploads/1/3/2/7/132710779/gikizabobalu.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/mopiwubufojopubiwuxi.pdfIn PDF document text
    • https://zavutotarewif.weebly.com/uploads/1/3/1/3/131379951/5570786.pdfIn PDF document text
    • https://jazediwugitali.weebly.com/uploads/1/3/4/7/134730671/0bd3e.pdfIn PDF document text
    • https://fafodedok.weebly.com/uploads/1/3/4/6/134602811/zunalarikipeju_xokafi_modutu_zeropanumuta.pdfIn PDF document text
    • https://vemugalibi.weebly.com/uploads/1/3/4/4/134484787/pefiwevufuderazare.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/pikilasavo.pdfIn PDF document text
    • https://vedirivokezijil.weebly.com/uploads/1/3/4/1/134108565/keremitomapop.pdfIn PDF document text
    • http://timinome.getenjoyment.net/ikea_catalog_2020_malaysia.pdfIn PDF document text
    • https://ladebixere.weebly.com/uploads/1/3/4/3/134318604/redepe.pdfIn PDF document text
    • http://ziposodepow.mywebcommunity.org/gleason_spiral_bevel_gear.pdfIn PDF document text
    • http://jilet2.club/best_c_compiler_for_android_phoneurjuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384029/normal_6006ef33bff3e.pdfIn PDF document text
    • https://kenaveduku.weebly.com/uploads/1/3/0/8/130813649/roniguxem.pdfIn PDF document text
    • https://tekuxarutupun.weebly.com/uploads/1/3/0/7/130775258/kuxagepajik-morenorejix-ponexumeka.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/8733012.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/81103397301.pdfIn PDF document text
    • http://eslife.pro/rf28hmedbsr_aa_ice_maker_resetw9i1n.pdfIn PDF document text
    • https://xakebugus.weebly.com/uploads/1/3/4/0/134018628/afb0737a0dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412174/normal_60409e8217cde.pdfIn PDF document text
    • http://cmbclientes.com/generac_5000_watt_generator_10_hp_tecumseh_pricekg7fc.pdfIn PDF document text
    • http://hesap-al-sat.com/new_assamese_song_2019_rohedoikj36s.pdfIn PDF document text
    • https://gobodozi.weebly.com/uploads/1/3/1/3/131398455/e9f35682a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 5792 bytes
SHA-256: 7609bfa9abb395bc78775dddea2ce51f1be92b86226e1eb339fb4d71a192afc1
font_01_sfnt_off0001064c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064C 10336 bytes
SHA-256: faa61f2984e538f4cd400ef07c8ab34a23a8e793a10123dad88080d6079d3290