Malicious PDF — malware analysis report

Static analysis result for SHA-256 98330f0a93033e1d…

MALICIOUS

PDF

84.0 KB Created: 2021-05-30 05:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e2106a4faa35aad74bef11f217003553 SHA-1: b13a4c73dd7a75ad8c265b57bc417116ca2b2dce SHA-256: 98330f0a93033e1d2dfd2f2be16c2c14d9031238bde2d1b8f6dff8eada6cd6b4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'arranging space crossword puzzle answers'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

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://dugedepap.ru/strik?utm_term=arranging+space+crossword+puzzle+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484990/normal_5ff941e4220df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_601b360130cd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_601cdf03e4626.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402261/normal_5fc597a007618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_60530bc3942e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3de6d060-ed03-4e8f-a219-f8b23178313e/how_do_i_get_a_lien_satisfaction_letter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d8e2133-3266-450a-8d22-460e8984cd09/what_are_calories_and_their_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cadcced1-8884-4faa-9e2d-12c820a340b3/70545259332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98fde473-496a-47f8-be7f-89776b8f1783/what_are_the_local_channels_on_dish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa157382-b638-4a55-817e-56307ddbc020/josekod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237ac57c-3398-453f-8581-c4c9c255728d/samsung_rf263beaesr_parts_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cd8f8c-4cfc-43d2-b2b6-709796e4259c/phet_capacitor_lab_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75f6461b-facd-45b2-9c10-178259859e1f/86252404336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea0b2b4-7004-4341-8755-9ede208e2890/samsung_un40j5200afxza_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b163d93-e3a3-4284-ad46-e8be2fd2f88a/pokemon_red_guide_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e599b158-49d4-41be-bef5-0aa6e4e6a237/83668582960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f50ffd-92a3-47e7-a585-3fecd6aefd83/65092066104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bfcb9b1-c072-41aa-92ec-8fdf88384f55/gta_san_andreas_superman_cheats_codes_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d76f462-2622-4a65-a0f9-836c2d76c80c/xabikajokozojulirad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc2eff6-7b6f-45f9-a819-9f42a65e150c/how_to_draw_a_realistic_christmas_tree_step_by_step_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ca5eb21-3d4e-4592-83ee-494ad6c49113/vafavujabokumumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56a3f95-4c4e-4eb4-ba90-6f299c1ab1e6/what_are_the_receivables_through_the_implementation_of_the_erp.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_off00010a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A99 5372 bytes
SHA-256: 1535ce02280225565823d2499499ce7a9da32ebff48173d3f40b8119418a8226
font_01_sfnt_off00011d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D06 11016 bytes
SHA-256: d6ce5cd830cae92767b41dab030c543ee0ad4f6d1a8696b30ff22e52dc93a212