Malicious PDF — malware analysis report

Static analysis result for SHA-256 d349e9d45cacca77…

MALICIOUS

PDF

81.7 KB Created: 2021-03-08 23:02:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1768b57fc23d546aca56a97fd486c06f SHA-1: d9a85a401e781041562e47fa4ed8314a58080362 SHA-256: d349e9d45cacca77432e114a7d14fffc64ad2fe9a03d56eba15216a5fcb6668d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to link farms hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/wb?keyword=i%20promise%20to%20make%20it%20up%20to%20you%20meaning PDF link annotation
    • https://wojopukutipu.weebly.com/uploads/1/3/4/3/134345686/41221d05436a2.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/dilapunitobujuxirokuf.pdfIn PDF document text
    • https://widetidutu.weebly.com/uploads/1/3/1/4/131453832/jarapojejexo.pdfIn PDF document text
    • http://thailandlove.site/rex-c100fk02-van_dn_manualowsf3.pdfIn PDF document text
    • https://bodukomemewasug.weebly.com/uploads/1/3/4/7/134701633/8533480.pdfIn PDF document text
    • http://dusipoweg.mywebcommunity.org/free_emdeko_sewing_machine_manual.pdfIn PDF document text
    • http://velixone.66ghz.com/chest_x_ray_reporting_course.pdfIn PDF document text
    • http://profibrend.ru/nozavugejonalujuvqtzyi.pdfIn PDF document text
    • http://mojenisijita.mywebcommunity.org/nudupegebu.pdfIn PDF document text
    • https://gadonivoxe.weebly.com/uploads/1/3/5/3/135331758/110840.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2e710d70-2ff5-4f39-be37-a51f109bb525/donkey_kong_64_character_select.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/vufun.pdfIn PDF document text
    • http://ranokevizo.rf.gd/bhagavad_gita_in_tamil_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/tonovuvepapejujajovuniwo.pdfIn PDF document text
    • http://gepowux.rf.gd/brahmanic_and_shramanic_traditions.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/levaremanevomug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/527f9c07-f975-4e4a-9012-86d219f19a56/how_many_carbs_are_in_a_soft_shell_tortilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0867d85a-95c9-41fb-b3e6-f7483a94bd4b/vidaketikimukar.pdfIn PDF document text
    • http://vezapuro.rf.gd/38107084901.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/gojubitifewemokewamugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29833067-4c82-4f64-a2f9-82be6a76d1b4/rurorunava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63743660-0e9e-4f03-b15a-7795df1fdb65/5346402137.pdfIn PDF document text
    • http://mebukaronov.epizy.com/21110124759.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B9 5092 bytes
SHA-256: 73b526c6a3af96c599fb985e500c9d63736e152a7d556b44a860b4a3f25636b9
font_01_sfnt_off000106f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F9 10532 bytes
SHA-256: 878604629134529ed8ba9288eea8ae6c3fdf8f470471374a264602109ec2892c
font_02_sfnt_off00012b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B19 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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