Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c35ee51632d77fc…

MALICIOUS

PDF

72.7 KB Created: 2021-03-28 12:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9061effbab929fc8b4a7c434264612d5 SHA-1: df1767c68445fa8d87b80b0297cfa51e887b2109 SHA-256: 0c35ee51632d77fcfe2e258767184f6776ba4c6bb5fdd104837503f8c0bcb5dd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning and distributing malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one prominent example being 'https://mimasalidapu.weebly.com/uploads/1/3/4/4/134466186/dfb3086.pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://leonvi.ru/wix?keyword=input+hack+codes+overkill+3 PDF link annotation
    • https://mimasalidapu.weebly.com/uploads/1/3/4/4/134466186/dfb3086.pdfIn PDF document text
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/zuwikinuseror-zofivijixojele-rexodetusufefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484115/normal_6042c6cc998a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_60325e807d48b.pdfIn PDF document text
    • http://pejokepi.mywebcommunity.org/beautification_project_proposal.pdfIn PDF document text
    • http://majelogajizivo.iblogger.org/vukamox.pdfIn PDF document text
    • http://buxosuloxe.iblogger.org/pun_in_romeo_and_juliet_act_1_scene_4.pdfIn PDF document text
    • http://dusanaputojinon.mygamesonline.org/convert_to_word_iphone_free.pdfIn PDF document text
    • http://dupuladusudired.mypressonline.com/anyone_can_whistle_script.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_6009cf7626ec1.pdfIn PDF document text
    • http://wujejejifi.mygamesonline.org/67166704586.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/92510636304.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/96448392049.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/88829249215.pdfIn PDF document text
    • http://roxujewov.myartsonline.com/enemy_pie_read_aloud.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/2004_toyota_alphard_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/12646874137.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/korean_dictionary_with_english_translation_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/what_does_it_mean_to_be_go_down_a_rabbit_hole.pdfIn PDF document text
    • http://xivubijorudi.epizy.com/spalding_48_basketball_system_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/65074101225.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/spring_framework_java.pdfIn PDF document text
    • http://puwokamavureme.rf.gd/75730713637.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_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 5384 bytes
SHA-256: d28a12e444b4f6fcb54c505c126ab8d86df104f2f897898f18c83a5c156a2795
font_01_sfnt_off0000f149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF149 10872 bytes
SHA-256: 5864e92a8d0e3ab0e3b3515dd4279c53c9fd689b7701a15824c5115e15cdd30d

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