Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4987989c051f018…

MALICIOUS

PDF

73.0 KB Created: 2021-03-07 09:10:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 334a3558f24736b33886a273bee87b86 SHA-1: 3791c5036ea30616a9ee32361a7de0cadc4b266b SHA-256: c4987989c051f018e45390da2325b8a0bf2f0fbe548c4f4ec199d4121a33cf7a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://ponafet.ru/award?keyword=what+will+happen+if+a+phone+battery+is+overcharged PDF link annotation
    • http://7evenrp.ru/driverpack_offline_download_windows_1043pih.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/gdRXhjC/geriwusevilevukewil.pdfIn PDF document text
    • http://ndfnasg.xyz/apc_back-ups_es_-_be550g-fr_-_onduleur_550va_8_prises_frkcg3k.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/LhfhcMi/15988598157.pdfIn PDF document text
    • http://mmmuuuue.space/ruveteguxfc.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/hjjdhcn/hello_neighbor_act_2_online_game.pdfIn PDF document text
    • http://mazejofeg.mygamesonline.org/how_to_sketch_derivative_graph.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_60222a4b86af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_6038d72c2a619.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/hgdHhaV/60981602019.pdfIn PDF document text
    • http://kujunat.medianewsonline.com/avent_bottle_sterilizer_instructions_how_much_water.pdfIn PDF document text
    • http://zexawil.22web.org/beta_thalassemia_trait_treatment_guidelines.pdfIn PDF document text
    • http://testvvd.xyz/babavilebenesonutupj1ypx.pdfIn PDF document text
    • http://loginwithfb.site/solomons_organic_chemistry_10th_edition_solutions_manualn1x4o.pdfIn PDF document text
    • http://golixudib.mypressonline.com/how_to_observational_drawing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ritarejameja.epizy.com/53253791017.pdfIn PDF document text
    • http://xekinawofer.epizy.com/how_do_i_get_from_london_to_portsmouth.pdfIn PDF document text
    • https://c216880a-03a2-4774-ab7e-121c93799e8f.filesusr.com/ugd/b5aed9_39382454ef2f4333aabc100bec4f3401.pdf?index=trueIn PDF document text
    • https://bac325b5-3710-4a60-ba01-c1ac5e8a7650.filesusr.com/ugd/c111de_532197e841314ac79012d1deee511732.pdf?index=trueIn PDF document text
    • http://ribaxekag.epizy.com/pogil.pdfIn PDF document text
    • http://divogidiguxofib.epizy.com/icse_board_full_form.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_off0000df94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF94 5824 bytes
SHA-256: 6c48af28237d6a18ed18c4d9e4bed9ae32a53fead57c17d24e26f36c550bfbf9
font_01_sfnt_off0000f383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF383 10144 bytes
SHA-256: 7f091cdbe9fd2d5c5b701acb8343e12670583204e6cfca1f9fd8911bf567524a