Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd19d442fa543d0f…

MALICIOUS

PDF

73.4 KB Created: 2021-03-17 00:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd4567b9051afce4722b43c1f5687694 SHA-1: b10c54ec504eb3bca23016eb1e9a4848cd32f6db SHA-256: dd19d442fa543d0f69447aba481cdc1106b2cb45e8e565054acf95b7f1dabf44
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9465

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/award?keyword=blank+south+america+map+pdf
    • http://xibawolafubiz.getenjoyment.net/87729037086.pdf
    • http://fusekimutoxi.sportsontheweb.net/90474826660.pdf
    • http://burivuvuju.medianewsonline.com/pekevoxebesulemilet.pdf
    • http://zonuvak.medianewsonline.com/a_defense_of_abortion_david_boonin.pdf
    • http://nuvagefo.medianewsonline.com/werage.pdf
    • http://pugisapi.mypressonline.com/vizirefojuwubisiluxuvir.pdf
    • http://merulabodonulu.iblogger.org/72179441766.pdf
    • http://finuxezanasa.mygamesonline.org/blackjack_basic_strategy_6_deck_hit_soft_17.pdf
    • http://babusokojanog.sportsontheweb.net/the_laws_of_prosperity_kenneth_copeland_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/guwutivupudutu/types_of_sentences_worksheet_for_grade_7.pdf
    • http://vevurikadi.epizy.com/kisipunezimunipus.pdf
    • https://s3.amazonaws.com/ronenitevodo/party_mom_parents_guide.pdf
    • http://zipoxibel.epizy.com/tamuxigaz.pdf
    • http://bajokekez.epizy.com/good_golly_miss_molly_sheet_music.pdf
    • https://s3.amazonaws.com/wetevali/badrinath_movie_song_malayalam.pdf
    • https://s3.amazonaws.com/mexavofezoxi/etv_tv_guide_for_tonight.pdf
    • http://pojozija.onlinewebshop.net/wevixugumuwijaveninobo.pdf
    • http://zakevopeporo.rf.gd/8054756046.pdf
    • https://s3.amazonaws.com/nitidadufetenu/mexoxodowibikutetamefom.pdf
    • http://rivowotow.epizy.com/orchestral_vst_free_fl_studio.pdf
    • http://positajugopisu.myartsonline.com/genie_garage_door_not_opening_with_remote.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e858.bin
8544bd4f3392579a4e9db2166a9decd28a3136feabe0198bd923486f51f3961c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE858 5508 bytes
font_01_sfnt_off0000faed.bin
5c32211ffc2b58be82900f7d63d76832684a15f25f923c9cdde1716203dbdbff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAED 11364 bytes

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