Malicious PDF — malware analysis report

Static analysis result for SHA-256 996596999ced881e…

MALICIOUS

PDF

82.2 KB Created: 2021-03-14 10:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d898b3293962960bbc1eefefae196522 SHA-1: c812ac8f44ef9442f3fd9ea4048c3a9bfa0cc431 SHA-256: 996596999ced881eb2345209f24974718f4c300413b087fc3d88d0925c814c02
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a lure for a free software download, specifically SQL Server 2012, which redirects to a suspicious URL. This pattern is consistent with phishing or malware distribution campaigns.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/123?utm_term=sql+server+2012++full+version+free PDF link annotation
    • http://pelinebaj.mypressonline.com/70733321237.pdfIn PDF document text
    • http://ecoservice-vlad.ru/bukiperedijesokosmbul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477655/normal_6013e47e8d186.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/software_development_services_definition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5fee0f5a4fed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_600eb521714e7.pdfIn PDF document text
    • http://firstflirts.site/podupwi5fh.pdfIn PDF document text
    • http://tehnotop.site/kark_seme_trkler_40_adet_mzikc2yzh.pdfIn PDF document text
    • http://aduo5.online/weather_news_live_stream_now2dw5h.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/aiegjij/jifijimuputebobelaxinar.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/hehc1Q2/draw_joust_gameplay.pdfIn PDF document text
    • http://lightly.store/36175052833xb0c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455197/normal_5fdb1979352b2.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/gekixadonuru/galofonavo.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/86481866042.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/banjo_tooie_glitter_gulch_mine_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/27513348843.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/baumer_og_73_un_1024.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/algorithms_of_oppression_discussion_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/54964361075.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_off00010172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10172 5164 bytes
SHA-256: 2491a30aaa9491b507a7a78f149dd56bc077ffb5542db7c148df44a05d3164b1
font_01_sfnt_off0001132c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1132C 12272 bytes
SHA-256: 01c53e6fd34494339f36a40da1c9e8ed1b3cc2617c075436584973d5ffbb993e