Malicious PDF — malware analysis report

Static analysis result for SHA-256 4186519d812d8bd2…

MALICIOUS

PDF

86.8 KB Created: 2021-05-12 10:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32c9e8a536933675aedae118afbe456c SHA-1: 26a1d16fccd727bba0545f7063d3336e0ed686da SHA-256: 4186519d812d8bd217255fec38b508491cfd342154fa85ae052479e560570e05
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a benign query, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The presence of multiple unknown URLs further supports the phishing and malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=you+make+me+happy+quotes+for+boyfriend
    • http://matawobedopikam.mywebcommunity.org/wolawewadutite.pdf
    • http://allerop.xyz/ropefovijujetukopuxqk5q2.pdf
    • http://paxenazubenib.mygamesonline.org/97490322862.pdf
    • https://cdn-cms.f-static.net/uploads/4450502/normal_5fe615f95f5e9.pdf
    • https://cdn-cms.f-static.net/uploads/4389823/normal_60171beac55a9.pdf
    • http://kenugizi.getenjoyment.net/wodemafin.pdf
    • http://gudokav.sportsontheweb.net/why_my_electric_pressure_washer_wont_start.pdf
    • http://wovoradomumakil.medianewsonline.com/vosaje.pdf
    • https://static.s123-cdn-static.com/uploads/4414672/normal_5ff7f40c3c7b9.pdf
    • https://ropexosuwewi.weebly.com/uploads/1/3/1/3/131380205/5313889.pdf
    • https://sarefipa.weebly.com/uploads/1/3/1/3/131398419/d23384.pdf
    • http://govuxojikasumot.scienceontheweb.net/see_me_nicholas_sparks_film_online_subtitrat.pdf
    • http://vorecan.fun/ahpra_forms_wrig_30v0sl7.pdf
    • http://rulajamizap.getenjoyment.net/bergey_s_manual_of_determinative_bacteriology_free.pdf
    • https://cdn-cms.f-static.net/uploads/4367922/normal_601af734319cf.pdf
    • http://duplicwcnj.space/jifogibogasofihkz5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lazolu/new_ethiopian_music_video_2017_free.pdf
    • https://s3.amazonaws.com/kawotexulozax/basic_computer_knowledge_notes.pdf
    • http://naxesabefadufu.atwebpages.com/90504548150.pdf
    • http://wozitoso.atwebpages.com/vuvuveju.pdf
    • https://s3.amazonaws.com/lofese/applied_finite_element_analysis_with_solidworks_simulation_2017.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://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea27.bin
c1bad7e1cefc864c7f7ad82422162ff60ad93dd4ce691007a89ea9941bcd7eca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA27 5524 bytes
font_01_sfnt_off0000fcbb.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBB 1800 bytes
font_02_sfnt_off00010548.bin
fc42baa83d62b381ee0460fbbf3464e7f7a12bb24aac9985068bf7313351f730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10548 10484 bytes
font_03_sfnt_off0001291e.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1291E 16312 bytes
font_04_sfnt_off00013ea9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EA9 4324 bytes

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