Malicious PDF — malware analysis report

Static analysis result for SHA-256 9804d17af669d4e2…

MALICIOUS

PDF

69.4 KB Created: 2021-02-24 15:32:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a17530c4207f88dfb79d66259cbfe195 SHA-1: 4a1f44124f115c31007c41e823991f5d50d440a4 SHA-256: 9804d17af669d4e2530980ab051cd029c98ec88f6e04b47722b6866578650a7b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicates this malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=is+there+a+continuation+of+your+name PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470399/normal_6013067f71303.pdfIn PDF document text
    • https://cdn.sqhk.co/pekebugus/jaozghy/odia_bharat_lila_hd_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408997/normal_6000f4d39bad6.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/kenneth_cole_reaction_analog_digital_watch_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/lcIqgco/open_house_chicago_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/MzijigZ/vatisinavuwubilet.pdfIn PDF document text
    • https://cdn.sqhk.co/danexili/hdcijhi/block_puzzle_jewel_hack_apk_download.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/37577653077.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/dIjyjfY/gopro_max_360_video_editing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394060/normal_5fe5a10c4905e.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/zujujurokexixa.pdfIn PDF document text
    • https://cdn.sqhk.co/bafujifi/ifvS3gc/free_ringtones_for_iphone.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/dudujopixejikug/concerning_hobbits_sheet_music_alto_sax.pdfIn PDF document text
    • http://fagorawed.rf.gd/the_wolf_among_us_adreno_full_apk.pdfIn PDF document text
    • http://zuvineduwofuxo.epizy.com/google_documents_excel_sheet.pdfIn PDF document text
    • http://rutipozi.epizy.com/briggs_and_stratton_power_washer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/giorno_piano_music_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/android_bottom_navigation_bar_selected_item_color.pdfIn PDF document text
    • http://rawodofomer.epizy.com/gujipuwegufadu.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_off0000d512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD512 5128 bytes
SHA-256: 7c6c1d2f38ae44b13895a2ccac6c17cb81466ee48b04e0338eb8519147cf2aa6
font_01_sfnt_off0000e664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE664 9940 bytes
SHA-256: 9abf8b75cec2815af6194b19ae5c0da6fb379de70aa48322a1b6ee19361af303

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