Malicious PDF — malware analysis report

Static analysis result for SHA-256 531a2af8dd053694…

MALICIOUS

PDF

80.7 KB Created: 2021-03-18 23:32:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8cd0a1214332cf00e0cfee048a256775 SHA-1: 19a270876430d73e61925a565f42bd689b77f9d5 SHA-256: 531a2af8dd053694ce1702f5fb37d62f2baf65dd014e03d506cea752b88cde21
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=frankenstein+study+questions%252Freading+guide+answers PDF link annotation
    • http://ledimpress.biz/what_are_the_two_strands_of_dna_calledawyh5.pdfIn PDF document text
    • http://busivel.xyz/1677400460284dft.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/13042226265.pdfIn PDF document text
    • http://fruct.space/do_aquatic_plants_do_photosynthesishlb46.pdfIn PDF document text
    • http://povar2020.site/yy50qt-6_wont_startuxslq.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/how_much_does_a_250cc_dirt_bike_cost.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/sutawowirosuvuv/javafx_scene_builder_2._0_eclipse.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/fevozovafapujufiked.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/65788790742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/610abb31-3b94-4d5a-8c0c-6cfe05a018ed/trap_bunny_bubbles_racist_song_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0560553-570a-4b75-9c0d-ed5f69416d8b/37796781109.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/chemistry_regents_labs_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/dowaninajemojere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69213e2e-364d-4d5d-8fb3-b987ff9c15c8/problemas_en_paraiso_chapter_8_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/baldi_s_basics_apk_mod_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/brighton_pier_fishing_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/guided_cow_elk_hunt_utah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc939709-afa2-4fd1-816d-ac3b341f7e30/kegipivoloful.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/40938685359.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/sky_movies_hd_bollywood_2016_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/35871632780.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_off0000fc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6D 5336 bytes
SHA-256: 48ee36aa48cde7aa92610b1ebf7f43d191e6068a86daa48e64f7c1590b2ce892
font_01_sfnt_off00010ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBC 11256 bytes
SHA-256: a4c86ece4f271c5b2e6c6eac8efdbefb772414250b3fe10bc4169d896d6b9944