Malicious PDF — malware analysis report

Static analysis result for SHA-256 095e11d241743e3d…

MALICIOUS

PDF

87.5 KB Created: 2021-03-20 15:18:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cee0b38cfd658b306974101928bf296d SHA-1: 54a36bc7357548631108e01ded1b904276cca0e9 SHA-256: 095e11d241743e3ddd8e1eba8429abd9595f7f64ccadde1f2718b433bf6d7a4d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://dugedepap.ru/aws?utm_term=what+can+i+use+instead+of+yeast+in+pizza+dough PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470532/normal_601902d0beccd.pdfIn PDF document text
    • http://yognat.space/46802677879rmlgl.pdfIn PDF document text
    • http://kyukty68.xyz/fagesfvqvk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467950/normal_6038e7c26ec64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5fc78fac3211c.pdfIn PDF document text
    • http://edevletorg.com/744390996185l9nt.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/how_many_types_of_dopamine_receptors_are_there.pdfIn PDF document text
    • http://uuuuull.space/sonicwall_tz_205_manual2raak.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/how_much_does_dhl_charge_for_international_shippingn3fo4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445325/normal_60071a8ecef32.pdfIn PDF document text
    • http://dazenad.iblogger.org/systematic_theology_by_john_frame.pdfIn PDF document text
    • http://tegor.xyz/vegetarian_bodybuilding_meal_plan_for_femalesajrpz.pdfIn PDF document text
    • http://fruit-ita.fun/4418173435b61f4.pdfIn PDF document text
    • http://werenntaq.online/killstar_size_guidejkrg9.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/summoning_spirits_download.pdfIn PDF document text
    • http://kedutugadow.iblogger.org/story_of_the_song_when_peace_like_a_river.pdfIn PDF document text
    • http://ilkertr.shop/65000956188xu2y5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387808/normal_603b24074c260.pdfIn PDF document text
    • http://topsalon.xyz/elements_of_communication_system_in_hindiez1y8.pdfIn PDF document text
    • http://luxuwum.mypressonline.com/robige.pdfIn PDF document text
    • http://gapijet.scienceontheweb.net/academic_writing_skills_3_teacher_s_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://potubavaziripek.epizy.com/vijanewixap.pdfIn PDF document text
    • http://tituroxir.rf.gd/wutuvinonulo.pdfIn PDF document text
    • https://61249681-e2d1-4375-841a-b3723294d79c.filesusr.com/ugd/3d514e_63a413e278ec400e8dff8c5223924ec6.pdf?index=trueIn PDF document text
    • http://vobozezojip.onlinewebshop.net/sap_bods_4._2_interview_questions_and_answers.pdfIn PDF document text
    • http://mukoxegolada.epizy.com/what_happens_after_99_years_lease_india.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_30491110e252407ca8da0f0b9652f190.pdf?index=trueIn PDF document text
    • https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_f5981bc13480458b972b1da573a79067.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDC 5456 bytes
SHA-256: ff1b72e5da8842fcc1b6e7214b41e8159ca7a206699145dd7eff7f01f31e554d
font_01_sfnt_off00011092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11092 12040 bytes
SHA-256: c5a5ff3776dcd3e63455eb5d27eee6bd67e6cf5ce52674f1dfef210a7fe165b5
font_02_sfnt_off00013925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13925 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2