Malicious PDF — malware analysis report

Static analysis result for SHA-256 1972ba38dc6452d3…

MALICIOUS

PDF

97.2 KB Created: 2021-03-10 09:19:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 897eb0ea7f30d48709d2c21e56fb55fc SHA-1: 74ea534d11bcac7d94f04144dc9af7ff2380c9cd SHA-256: 1972ba38dc6452d3201798437661d4888a750e9e7676715eaee7c73a6e44bd61
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a malicious URL disguised as instructions for a fabric steamer. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=conair+deluxe+compact+fabric+steamer+instructions
    • http://vash-komfort5.ru/pasolaanru7.pdf
    • http://miravozexafoxiw.iblogger.org/51808082164.pdf
    • http://mantenancie.com/cone_ice_cream_machine_price_in_lahorepb3zv.pdf
    • http://harkateine.fun/16157930168ia8e0.pdf
    • http://maturibcgj.space/libro_de_trigonometriaw9ztf.pdf
    • https://cdn.sqhk.co/pomisiforuko/UqA6Kgg/delicious_emily_s_road_trip.pdf
    • http://cardioactiveitalia.site/hootsuite_vs_social_reportwck4o.pdf
    • https://cdn.sqhk.co/nupasoxure/gigihgD/sniper_master_city_hunter_mod_apk_rexdl.pdf
    • http://copyrighthelpbusiness.net/kuvasirupeluwawawakeki8xew2.pdf
    • https://static.s123-cdn-static.com/uploads/4419832/normal_6008da1391c12.pdf
    • https://cdn-cms.f-static.net/uploads/4459776/normal_601e16f533d1d.pdf
    • http://my-favshopc.online/complementary_feeding_guiden6919.pdf
    • http://pasetbs.xyz/bopommqahs.pdf
    • https://cdn-cms.f-static.net/uploads/4381302/normal_5fe659311a882.pdf
    • https://cdn.sqhk.co/wufevinek/iabAjdm/reversibility_of_thought_definition_psychology.pdf
    • https://cdn.sqhk.co/zopizote/bhWjdia/snowden_2016_where_to_watch.pdf
    • http://dostafood.xyz/vomedubigidazaxiwexeg9hl9u.pdf
    • https://cdn-cms.f-static.net/uploads/4477873/normal_5fd146cb221cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://buzuvemujogumob.epizy.com/zosisimix.pdf
    • https://s3.amazonaws.com/tifuwuw/busowijukitigobu.pdf
    • https://s3.amazonaws.com/zosevid/ccna_200-_125_exam_format.pdf
    • http://rigitusavogu.epizy.com/nadifajisakaborar.pdf
    • https://s3.amazonaws.com/divelatoxa/84921542249.pdf
    • http://vujulazi.epizy.com/graphic_designer_portfolio_website_templates.pdf
    • https://s3.amazonaws.com/zarelusipofox/cannot_format_sd_card_access_denied.pdf
    • https://s3.amazonaws.com/sutawowirosuvuv/61349248216.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001406f.bin
8a0e66eac69a2417423fef703513449db7f7853ad5e23e612e4c304afaac1b42		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1406F 21488 bytes
font_00_sfnt_off0000feda.bin
0470a7a6ba71db37ab3ac5538c9137a24c8ef90ff5a55998df8daa0603d19575		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDA 5416 bytes
font_01_sfnt_off00011128.bin
faad32cee9597cea4b7282a64e7b1ab3f78860bb93f51b57859b0fe41654bcb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11128 14868 bytes
font_03_sfnt_off0001656c.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1656C 4324 bytes

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