Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5efadeb37134015…

MALICIOUS

PDF

89.2 KB Created: 2021-03-05 19:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d069802970923807ba73102c0a5c61ca SHA-1: 4f322dbf68fd365342bf979456fcb0c51b17f2dc SHA-256: a5efadeb37134015a0c61fa5740bdac604726988af6d317c0c4b438ab6eae472
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to disposable domains and potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. ClamAV also detected it as 'Pdf.Phishing.Trojan'. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is not content delivery but rather to host a link farm for SEO manipulation or to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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 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://druttle.ru/wix?keyword=p3p+female+max+social+link+guide PDF link annotation
    • https://cdn.sqhk.co/vopiruwikil/fy0ighb/racing_fever_unlimited_money_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/iaLfgho/juice_wrld_splash_2019_spotify_streams.pdfIn PDF document text
    • http://armlur.space/bejijobijexefoujs5y.pdfIn PDF document text
    • https://cdn.sqhk.co/fovomesit/ibtqOy1/raft_survival_ocean_nomad_simulator_pc.pdfIn PDF document text
    • http://cashthe.ru/lusidipc97ds.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/3aJ7spp/pizzaiolo_breville_recipes.pdfIn PDF document text
    • http://myluckybet.xyz/91788041337qfm9s.pdfIn PDF document text
    • https://cdn.sqhk.co/pugusomimoro/gcs3dhd/senulotudiraripumukanaset.pdfIn PDF document text
    • http://ontrade.top/zokugomivoro4ea7k.pdfIn PDF document text
    • https://cdn.sqhk.co/kegetaxob/R3YvGtP/pozodemevijexis.pdfIn PDF document text
    • http://ar-foto.art/48833563761yf4jd.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/c4fhbsR/lidowiwipusezilo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/jaloto/dusizore.pdfIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_bc64c9c563c74bebaa8b4f60af67e87a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sorogamat/ancient_greek_timeline_video.pdfIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_2d0a2a6420e54b9d9e4bd1983fac086a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiduro/405_express_lanes_weekend.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/80233549453.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/kemiwujiroxen.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/39686016775.pdfIn PDF document text
    • https://11627308-8c8f-4f08-99ed-0ad85160907d.filesusr.com/ugd/682d1c_d84308664b18456999590106b2e9069a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/banula/26975068856.pdfIn PDF document text
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_3b292786bb444a838e1d23a838e7f093.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/what_are_the_examples_of_foodborne_diseases.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_14ab537ce1734de9a07843a2a7708982.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001078e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1078E 5676 bytes
SHA-256: 5c4c7b4c4264114f38d82b63bb0c041dee0b97dfd1f1acf34e841fc97da49edd
font_01_sfnt_off00011acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACF 6668 bytes
SHA-256: 63f252d0b63dffd29f31f1094bea33b53c04fd6b7fddd41128677eb4fb86e1b1
font_02_sfnt_off00012c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C91 12996 bytes
SHA-256: 460ee68e9ae869bc6b573c35e8e0a318e0228f23f4a5bb0b3d130485530de318

Open this report in the interactive analyzer, or submit your own file for analysis.