Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d97624fbb34a6e…

MALICIOUS

PDF

82.8 KB Created: 2021-03-18 10:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f710e33f9510c093051d941ef6b539f8 SHA-1: e946ac832a1d980df03f83a0445dba6429b3d8b1 SHA-256: 31d97624fbb34a6e002c08700f6f084021da426ebdf48960b7d744deb721b15a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. While no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/123?utm_term=les+vetements+fle+pdf
    • https://cdn.sqhk.co/vivokunavu/g0igEOS/xekofuresijisovuv.pdf
    • https://cdn.sqhk.co/gawagunikuw/higf2Ni/mega_man_6_free_download.pdf
    • https://cdn.sqhk.co/dukoredod/iehbjdl/rifedidediletux.pdf
    • https://cdn.sqhk.co/kufiremikaf/ha7ZhIM/zovanezoduliwuk.pdf
    • https://cdn.sqhk.co/vazoguzo/jdDgchc/30688617516.pdf
    • https://cdn.sqhk.co/gokarunedod/ajbieDF/45988689613.pdf
    • https://cdn.sqhk.co/rosomugimo/XvJdR28/wagefesumotevamada.pdf
    • http://bridgecommerce.com/mavoxemim87do.pdf
    • https://cdn.sqhk.co/kilobubag/ifWjehc/poduveladepibo.pdf
    • http://idealslimitalia-ufficiale.site/antigone_ruby_blondellgs0cg.pdf
    • http://ruguwafe.scienceontheweb.net/93898938188.pdf
    • http://vijexibat.mywebcommunity.org/distributed_systems_architecture_book.pdf
    • https://cdn.sqhk.co/gujowaxexag/Lgghdia/best_mechanical_keyboard_with_hot_swappable_switches.pdf
    • http://lavkavkusa.store/here_comes_the_sun_baritone_ukulele_chords47gvu.pdf
    • http://cabinetshub.xyz/gifowd8ytp.pdf
    • https://cdn.sqhk.co/monasomeb/ifibidx/wadumipavaparuda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bisiku/63488617242.pdf
    • https://s3.amazonaws.com/banula/16178791849.pdf
    • https://uploads.strikinglycdn.com/files/76cb068b-1fc9-46cd-82d6-8a6cee2d23f4/negocio_del_siglo_21_gratis.pdf
    • https://uploads.strikinglycdn.com/files/ca964146-fff5-4573-91cc-0477c8c41408/bulking_diet_meal_plan_india.pdf
    • https://uploads.strikinglycdn.com/files/108e27dd-24a0-46bd-bc70-e3e7e5057cd8/how_to_describe_a_sunset_metaphors.pdf
    • https://uploads.strikinglycdn.com/files/47d1d632-6539-45d3-8c28-4d74a6f4d5c5/the_stand_2020_episode_2.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f501.bin
51031ce7172ace544779ae6cc04fd40fe38756b70bcaa12ab12195b14fc99982		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF501 4512 bytes
font_01_sfnt_off00010449.bin
8de09d70300d5572833bfac3cd86bd5608fadfe28df3009e8f3c9133846e6a17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10449 13724 bytes
font_02_sfnt_off00012de2.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE2 4324 bytes

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