Malicious PDF — malware analysis report

Static analysis result for SHA-256 0200343b8f6115f7…

MALICIOUS

PDF

96.3 KB Created: 2021-03-22 06:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3a4c2b1379b7e8bc068caa2db801f151 SHA-1: a47947b0704e0df4700bfc7c3b49ab4586802f1b SHA-256: 0200343b8f6115f7efc5834ad89d44e1927afbe4c44aa53c520710556137df44
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or redirection attack, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=peter+drucker+managing+oneself+pdf+download PDF link annotation
    • http://doucheop.xyz/moponaremugovirl4dl.pdfIn PDF document text
    • http://ita-bio.fun/how_to_draw_a_cute_cartoon_dog_easy0tknz.pdfIn PDF document text
    • http://chebsvet.ru/lagoregetelilekefanadetuu4lbn.pdfIn PDF document text
    • http://good-production9.site/sofurelitiditezixe1sb0g.pdfIn PDF document text
    • http://efarbok.xyz/91367256048upq2p.pdfIn PDF document text
    • http://goromeo.club/82272371335azgc3.pdfIn PDF document text
    • http://testersairf.xyz/pinball_arcade_ps4_tables_listpj16f.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/translation_french_english-french_dictionary_reverso_collins0cw98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowipazivavi.epizy.com/80096087619.pdfIn PDF document text
    • http://tutazex.rf.gd/ionic_2_template_github.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2ea94e-9baf-4bc6-b239-ebbdfe423aff/gubagazapuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19cf5ca-ad27-44ac-8a0f-dc8497153a2b/didenexufesakugekasul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/485719b3-5cbf-452f-aedb-a173292c138e/fupulatugogore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6edd57c-aa21-404f-9a22-0979e27d2fbb/how_to_operate_sanyo_tv.pdfIn PDF document text
    • http://loratozojakin.epizy.com/best_light_reader_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0250cbfa-9810-41c7-bf0e-71999ee01448/i_lost_weight_eating_fast_food_everyday.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e20722b8-c898-4c19-bb74-30027cc9213e/modern_day_translation_of_romeo_and_juliet_prologue.pdfIn PDF document text
    • https://8b1d1a20-f0f3-43d5-aeb5-704ac988d6c7.filesusr.com/ugd/9dbc1d_ccbd1131333a4e5cbe9bc1d282fc507e.pdf?index=trueIn PDF document text
    • https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_b4048681cd794bcd8575c92f491fdbff.pdf?index=trueIn PDF document text
    • https://cf336f9a-6a79-4542-9269-5b62d6eb69dd.filesusr.com/ugd/1daf83_0201b26e8c524ee69f36f73d5ed635ea.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13848 5632 bytes
SHA-256: 567e214c47e3ed00adcac257dbffaabacac07105ffd8fc27195aea8ac958560e
font_01_sfnt_off00014b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B71 12144 bytes
SHA-256: 8d150b7c8035fd6e0e7dda5bab9ee871cdcfd6bbb17356a97e84262a0555129d