Malicious PDF — malware analysis report

Static analysis result for SHA-256 82fe858a9d24fe9d…

MALICIOUS

PDF

83.9 KB Created: 2021-03-22 15:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9b95f4ea05f1ff8a253af41e46a2185b SHA-1: b84735c90717b291d94a61145c700d56850ba751 SHA-256: 82fe858a9d24fe9d05b00d1a165a933f5955817e6555b6c2a3c87fca487c21e1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one URL flagged as suspicious. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure for downloading a PDF, likely leading to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=ma+political+science+books+in+urdu+pdf PDF link annotation
    • http://ryukzak.digital/turtle_adventure_world_game_downloadk9n7q.pdfIn PDF document text
    • http://betflixguvenilirmi.com/power_of_now_book_clubg2iv2.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/Cnjdbf2/international_marketing_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/vebudirepo/bLjf5DC/castrol_edge_titanium_fst_0w40.pdfIn PDF document text
    • http://cenderaoriginator.com/anveshi_jain_app_apkih4kc.pdfIn PDF document text
    • http://love-your-lips.online/30129963380jlvpm.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/tamobalasu/ganpati_aarti_dj_remix_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a86c710a-3689-46f8-8293-8a7753a04b93/what_to_do_to_get_real_estate_license.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/fuxaburewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0f5fa4-d09f-43e9-aef9-2fe5e677ad27/17859905936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dc79f1d-3c21-4b5a-bcfb-24697414bc82/the_collector_lol_bug.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/how_to_adjust_time_on_armitron_pro_sport_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa92bbfc-0a9c-4696-aa5b-2f2b470f9190/bosch_glm_150_c_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d879801-6d2d-4496-aeca-71a3fb8247c0/ahsoka_book_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d8097ec-de91-4ad7-a7f8-32a9069b8c7d/24793602705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98eddec-8871-473b-957b-cca978e9a2b2/37138920716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc3030b-0caf-4cd0-ac5a-4db9cfb3ae47/kajerogadipasiruponuzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfc4d40-60e3-46af-8e9a-1f311de9cc7c/50155662237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a810b590-772e-4032-9fcd-77c8e6fb31a4/chemistry_basics_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d40974d-5b98-4f7d-8f18-79f5e92e80ca/kapebedatufurager.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011ad0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11AD0 23148 bytes
SHA-256: 343cb7ba4f006d70c1cb311ec1e1ee7d8cb0864a5509b8275d67e45957a2535d
font_00_sfnt_off0000e1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FD 5360 bytes
SHA-256: 9c6283d112b0d15ecce6e97fb0a5fa9eff7e29732aa330ec60c576a07a5f72d0
font_01_sfnt_off0000f44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 11416 bytes
SHA-256: 65651b04331cc7a526305db8f58a9e7f8ff3e456dc053eb889e8f296fbfbf944

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