Malicious PDF — malware analysis report

Static analysis result for SHA-256 86419687b79bb3ba…

MALICIOUS

PDF

78.8 KB Created: 2021-04-08 08:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00db9cc90cf61923428ba575573b0dee SHA-1: 6e4eacd95e8de7e6cc9227173a6d26226f9dfb98 SHA-256: 86419687b79bb3ba142f9da0a445785a4e9c4554ab8c82fb1f5a6e369c13fbcf
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'fish feeder manual', which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/wb?keyword=eheim%20fish%20feeder%20manual%20pdf PDF link annotation
    • http://jobauthor.online/jevaponajazexapuziwola79u6d.pdfIn PDF document text
    • https://cdn.sqhk.co/dawiredi/hjr8gic/romantic_movie_night_at_home_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/jodariwem/dLNjahc/shoot_em_up_full_movie.pdfIn PDF document text
    • http://mgacessoria.online/how_to_make_a_climbing_training_planrdbz9.pdfIn PDF document text
    • http://characduwe.space/asus_tuf_x570_manualje5wq.pdfIn PDF document text
    • http://aov.one/zubavivusosopoxif4hu08.pdfIn PDF document text
    • http://7lessons.space/rekubowozoupi3v.pdfIn PDF document text
    • http://menbp.online/lynch_syndrome_screening_guidelinesisiy4.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovukuvi/1thfhjl/47233496618.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/lkmdgjb/pawurul.pdfIn PDF document text
    • http://pokypka.xyz/9509790671c5uyp.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/venunamazozuzo/lafujikabukiku.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/61498348421.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/97285488546.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/51035933077.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/zatisepujajipumajojote.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/popodokeg.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/bosch_super_silence_dishwasher_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/nugiwixomamegelaropelov.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/bubefopadubesojaxilibarum.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/pedijisoduvoje.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/where_did_kaash_paige_go_to_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/60796250177.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/what_are_the_roles_of_gender.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_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 5236 bytes
SHA-256: d4827fb1a698bce0c8398cf9cccab246b6d578db1c109743b9d8b1d4dba91ff3
font_01_sfnt_off0001077a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077A 11236 bytes
SHA-256: 4d479f7dd31fe455ff657c38feee7cac398a2087c1f28a4b46c2ddd4459eb1d6

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