Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98f697e1b6c6274…

MALICIOUS

PDF

78.0 KB Created: 2021-04-13 04:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cc519250ceaf44bfead30fa58e0304e4 SHA-1: eec7fad37466f88c176e8706cbfb2cd2b16e6604 SHA-256: b98f697e1b6c627488f37685440cd00f652dea2ea6a0e4c348a64b039a43af3e
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 strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'stock watchlist ios', suggesting a lure 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://resalured.ru/strik?utm_term=best+stock+watchlist+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366324/normal_605c41b9ab4c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402520/normal_6069a17bd8853.pdfIn PDF document text
    • http://rodina38.ru/79384283970b4wgx.pdfIn PDF document text
    • http://fullstacket.online/the_whipping_boy_quiz4ttq5.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/learn_spanish_free_app_for_androidso13yk.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/9dd86433-2c17-4479-9e58-7d5bff86d278/ginefenesaxup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61069a0-c44c-4b14-ba8b-d827ea13ff70/panasonic_kx_tga660_block_calls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dacea3bc-b1e7-4f5a-b7e8-fc6bfb116b46/cisco_ccna_training_free.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/blue_band_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e8b61b-7205-4eff-93d0-0428e78f57e2/1217216916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4fa5f0-da97-4bf2-8d41-ea1096f68aa1/fogler_2nd_edition_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/jifuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5ee2fb-b229-438b-8dc0-9a60d2b6393f/best_hemingway_books_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/dopewonakelebeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f45b1b-dc34-4047-9933-6bc636745fab/weider_ultimate_body_works_weight_limit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ec0f27d-c2c5-4cf2-a7fb-8b7668944f52/5652879909.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/davis_drug_guide_for_nurses_15th_edition_online.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/xakisekab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e42bd6d-1dac-485b-990a-a44c954d658d/tevakenanoviduma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b37a26-d58d-4f7c-a9b8-79b619b3df0c/how_to_hold_a_combat_knife.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA81 4996 bytes
SHA-256: 3a2723c6d0fd7e9636f3548dcfa401194592461ac512ce0409221353a0461e40
font_01_sfnt_off0000fb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB94 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00010422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10422 11216 bytes
SHA-256: 13dfaa3e776a743953750a5d655ef828dabd3780ee7bb76d3f715a7f0061722c

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