Malicious PDF — malware analysis report

Static analysis result for SHA-256 1527646a70744f99…

MALICIOUS

PDF

76.0 KB Created: 2021-02-21 08:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d3d2343d4e571422899e7a9333c01345 SHA-1: e3057483c791cb20f34665cb2596374aefa258f0 SHA-256: 1527646a70744f9939e24cd7effaba11142c8d92c0ab2bd56b5f902f3f1d25d4
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://seumenha.ru/wix?keyword=fisher+price+kitchen+1980s` suggests a lure to a potentially malicious site, possibly for phishing or malware distribution. The PDF structure and heuristics indicate it's a link farm designed to redirect users, and the presence of embedded URLs points towards an attempt to exploit users through external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=fisher+price+kitchen+1980s PDF link annotation
    • https://cdn.sqhk.co/rubovadu/hiEnidM/biwowavolisetagelire.pdfIn PDF document text
    • https://ribelogexarov.weebly.com/uploads/1/3/4/5/134500322/5185243d70.pdfIn PDF document text
    • https://cdn.sqhk.co/nujamuxeg/YjjjXja/zirowa.pdfIn PDF document text
    • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/xirur.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/XZRjdWF/bike_race_game_hacked_version_download.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/jh2D4jf/music_player_fled_hdmi.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/rjbjaBQ/red_alert_2_remastered_date.pdfIn PDF document text
    • https://wefidabewurar.weebly.com/uploads/1/3/1/1/131164485/8551157.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/7if5fjh/free_video_call_online_live.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/AhjZURG/derwent_inktense_pencils_24_pack.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://s3.amazonaws.com/tupofelasujewas/mechanical_engineering_summer_internship_report_sample.pdfIn PDF document text
    • http://wufaxetotubiji.rf.gd/78901514238.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/2407748684.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/88701877721.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/jupewupiwekusumebasa.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/gufogegunofulu.pdfIn PDF document text
    • http://velumosak.epizy.com/2011_buick_regal_performance_parts.pdfIn PDF document text
    • http://zoketuru.epizy.com/xunedubipakepemijeveb.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_off0000e0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B8 5020 bytes
SHA-256: 63ef96997ac040423f85a95474b1481cac400b4c170de1c0c3a2ec8d75493373
font_01_sfnt_off0000f1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BC 10260 bytes
SHA-256: 1513ae1baa32f5c7945e8bfe0a8fec17d008a91c885c2e00c8f4d2775f01da53
font_02_sfnt_off00011498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11498 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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