Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d6387dbbb70586…

MALICIOUS

PDF

178.2 KB Created: 2021-04-06 10:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4b1975cd3b95f51ca319d044dac51335 SHA-1: 70a5c1c3fdee42ba9e554ed8673aae3ec0192f00 SHA-256: f6d6387dbbb705860f57e6976acffb925df25881e8f1bf35b86b8988727b3712
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 0.9903

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://kuzutuzo.ru/award?keyword=bstc+2020+exam+paper+pdf PDF link annotation
    • http://srakan.space/antique_gregorian_sheet_music7n2dv.pdfIn PDF document text
    • https://xipakopubax.weebly.com/uploads/1/3/5/9/135966228/7be561.pdfIn PDF document text
    • https://bevamiwe.weebly.com/uploads/1/3/0/7/130739198/daluwekovi_xemezob_sogubinetipo_tadukejumefakum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497370/normal_602172d108b90.pdfIn PDF document text
    • https://tadadali.weebly.com/uploads/1/3/4/0/134095934/xafufisexotapuvimi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_6029213e0005b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467043/normal_600440707db76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489429/normal_5fe80ab92cf92.pdfIn PDF document text
    • http://biomaniks.website/bull_horn_sound_effect_free0lp6f.pdfIn PDF document text
    • https://pozuzabo.weebly.com/uploads/1/3/4/4/134432083/6362198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fc582b1797ed.pdfIn PDF document text
    • http://onlineeshop24.xyz/como_hacer_un_simulacro_de_evacuacion_con_nioskm51c.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/48001759764.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/nobaxilimiku.pdfIn PDF document text
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_1ad9b7d5203841cdaeb05345ed034cca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zukogi/becheniya_betabiyan_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/76161071905.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/new_hollywood_full_movie_filmyzilla.pdfIn PDF document text
    • https://3f054cde-0430-4828-89d0-5f77035cf230.filesusr.com/ugd/d93890_c0fef7f31d2940bca56b48c4dedda65a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/99198660776.pdfIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_0f0002be87304a6697bda74d13131875.pdf?index=trueIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_074ac10f6abf434b9b6293b546c41dd8.pdf?index=trueIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_6ee79d397652466399df9f04b57fcb90.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuwosil/a320_aircraft_maintenance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/78601067125.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000276f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x276F9 24272 bytes
SHA-256: 5e69a1483707f4185cbc85a3a209b3596db47e950ce75aa83851b987fda7ef1b
font_00_sfnt_off00021cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21CD4 5660 bytes
SHA-256: 131738db620fd9510ce8001697b96d43db85517550b4babec45e0486cb6a557f
font_01_sfnt_off00023003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23003 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00023b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B66 11224 bytes
SHA-256: d5aeb7c030090b1182e898545f300402f2b447a9590abb8d2e4b26c99d2a2050
font_03_sfnt_off0002618e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2618E 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15