Malicious PDF — malware analysis report

Static analysis result for SHA-256 898f0303d93e5281…

MALICIOUS

PDF

78.1 KB Created: 2021-03-17 17:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b229cbf629375c377b98d245d3d5f66 SHA-1: dd0b1bd3e8f74d85091513942cdbdfc99198d547 SHA-256: 898f0303d93e5281bbd05df6acc03c03b7cdb2c74a0c8b6d596d4c00e0534fe8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=re+chain+of+memories+guide', which is likely a lure to a phishing site or a download server. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of external URLs and the malware detection strongly suggest a malicious intent.

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://zajinet.ru/wix?keyword=re+chain+of+memories+guide
    • https://cdn.sqhk.co/tejusukaxajo/hcZn8jf/77560538920.pdf
    • https://cdn.sqhk.co/pofaxexaxi/6ijjeja/throne_offline_android_1.pdf
    • http://wozuxel.getenjoyment.net/6119114448.pdf
    • https://cdn.sqhk.co/nowavutu/bqHvaCA/craft_exploration_survival_apkpure.pdf
    • https://cdn.sqhk.co/noxisoture/9oXHfhd/sutumivepopilupag.pdf
    • https://cdn.sqhk.co/vixukose/jhfgiyI/starfall_calendar_2006.pdf
    • https://biziliwedurukax.weebly.com/uploads/1/3/4/8/134889104/b26c44bb94a.pdf
    • https://nojezedefefowas.weebly.com/uploads/1/3/4/7/134762002/fajipakevamibe.pdf
    • https://faliroralomi.weebly.com/uploads/1/3/0/8/130874474/61f059e92e5.pdf
    • https://cdn.sqhk.co/dovumisiwe/P8gjjgc/cumulative_distribution_function_notes.pdf
    • https://cdn.sqhk.co/tufuboloruj/gfgVhjh/legion_commander_the_art_of_war.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c16eec92-5017-48fb-b0fb-2e6ca469ad70/zesaz.pdf
    • https://uploads.strikinglycdn.com/files/6c898946-9cf9-45a3-aed3-e1ab01f7cd81/leropujiker.pdf
    • https://uploads.strikinglycdn.com/files/bcb261e9-02c0-4385-9894-c00283933854/ridisowotujipalitepe.pdf
    • https://uploads.strikinglycdn.com/files/a6efcc41-a90c-4b26-bb5e-364738aefd78/genetics_a_conceptual_approach_5th_edition_ebook.pdf
    • https://s3.amazonaws.com/jinabom/galaxy_s5e_android_10.pdf
    • https://s3.amazonaws.com/wufujudisu/craftbukkit_1._12._2_jar.pdf
    • https://uploads.strikinglycdn.com/files/d0d8f471-90d4-4738-b0b5-27477c24e067/microsoft_wireless_mouse_5000_pairing_mode.pdf
    • https://s3.amazonaws.com/lupuvogotog/88291654699.pdf
    • http://zonatitusajobo.onlinewebshop.net/friar_lawrence_is_to_blame_for_romeo_and_juliets_death_essay.pdf
    • http://kopolug.myartsonline.com/pitoterigusevikimukol.pdf
    • https://s3.amazonaws.com/mudurixo/navovakopevepatamavoro.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f08e.bin
3f6cccb8f085568ee971d2ce56324eff822de0e48c0f810f100791f468d9f440		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF08E 5408 bytes
font_01_sfnt_off000102ce.bin
d9395edb5752a1ff0748ca53a37240f3a2fc7874fa8fa71dfb80aec6a01c0129		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102CE 11996 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.