Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfb83306b6e6624…

MALICIOUS

PDF

69.1 KB Created: 2021-03-21 09:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f9a03ab518edb04f06884e5bbdfc3a5 SHA-1: 53df7ceebeec0aaad7460a2beb90c0e47c685610 SHA-256: 2cfb83306b6e662487e089e650a1134d9828666cde7fd12992e008bb2721cf26
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but the presence of the URI suggests a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=trieu+con+tim+pdf
    • http://xakidofe.sportsontheweb.net/kawasaki_fh580v_oil_filter_cross_reference.pdf
    • http://kersita.space/26297174480ifkye.pdf
    • https://cdn-cms.f-static.net/uploads/4411483/normal_60404fbe1f7a8.pdf
    • http://wgathering.org/xfinity_tv_remote_app_not_workingp4pmv.pdf
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/5487845.pdf
    • https://cdn-cms.f-static.net/uploads/4424645/normal_60282e684fd6d.pdf
    • https://wakevilapiz.weebly.com/uploads/1/3/4/9/134903367/poduririnakogewasetu.pdf
    • http://xamoxipuwizutux.scienceontheweb.net/nurebazijakepopejo.pdf
    • http://idealica-ituficiale.website/dururodelazu67jxv.pdf
    • https://juzasofudabin.weebly.com/uploads/1/3/0/7/130775050/gawokukagen-xomiz-gitipulef.pdf
    • http://fredo.run/nakolalel7n27.pdf
    • http://figimumagoko.mygamesonline.org/24349880478.pdf
    • http://gaydating.world/87569231322hsmbz.pdf
    • http://minosijasif.mypressonline.com/anatomie_de_l_appareil_genital_de_la_femme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/812c48c9-e647-421e-acc3-0b327681c9a7/75292682767.pdf
    • https://uploads.strikinglycdn.com/files/dc96a2b9-47a6-4cba-8fd9-dfde6856955f/tus_zonas_erroneas_english_version.pdf
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_67d5bac99e124b58a898309b8333ea67.pdf?index=true
    • https://uploads.strikinglycdn.com/files/221698b1-e994-4a8e-b7fc-660f90f387ba/dixie_chopper_tires_near_me.pdf
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_75b69906f82c4c938b910ca72a9ead7e.pdf?index=true
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_5b836925ee5448f199d3432ad0c444bb.pdf?index=true
    • http://fikelamizogu.myartsonline.com/66_national_film_awards_2020.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc14.bin
d66e52cd408358c7df561655fc0f417b88dfc961314b61f8cde9fe69e9883830
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC14 4832 bytes
font_01_sfnt_off0000dc70.bin
a0c0d8b831bd9f3b50ee7fe0af0dde55ea75ca3863a4b91a16bf2cee74e95fa3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC70 15360 bytes