Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d63a249da0808b3…

MALICIOUS

PDF

78.5 KB Created: 2021-03-12 08:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a35269fd8cea90657c071977834d2957 SHA-1: 91b0b816df987b6c658aba073be713cb0110e674 SHA-256: 8d63a249da0808b3ea1e32c62c3609baf584edf1dcd6ceaa12eac9cd7a726d2a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://golowaki.ru/wix?keyword=school+loop+login+dwyer` suggests a phishing or credential harvesting attempt, disguised as a search result. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://golowaki.ru/wix?keyword=school+loop+login+dwyer
    • http://zavarivaemvmeste.ru/what_happened_right_after_the_war_games_the_son_of_neptunee05zt.pdf
    • http://cabinetsop.xyz/best_annotation_software_windowsf001d.pdf
    • http://wotidoteked.mywebcommunity.org/fepegusadobifugekak.pdf
    • http://lotupojaxuvutix.mygamesonline.org/familia_bromeliaceae_caracteristicas.pdf
    • https://jasezanita.weebly.com/uploads/1/3/1/6/131637239/d7d429.pdf
    • https://cdn.sqhk.co/zifiguwosu/jdggygi/crazy_cooking_chef_kitchen_fever_food_games_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5ff1d3f05807f.pdf
    • https://cdn.sqhk.co/nupepewomaxu/ejgbhhX/92488150973.pdf
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5fe5a29d7dc9b.pdf
    • http://bikomowaxibujoj.medianewsonline.com/96973839011.pdf
    • http://kinoxca.xyz/lovuwalinoxogipuforimubkcs0.pdf
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/3196515.pdf
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/5376233.pdf
    • https://cdn-cms.f-static.net/uploads/4443803/normal_5fd6df74bf6d8.pdf
    • https://cdn.sqhk.co/lutakakijuro/hcbFWoU/hide_and_seek_imogen_heap_ukulele_chords.pdf
    • https://static.s123-cdn-static.com/uploads/4375088/normal_5fe3663c89074.pdf
    • https://static.s123-cdn-static.com/uploads/4498971/normal_5fcab5405f2a5.pdf
    • https://cdn.sqhk.co/fipimomozuk/mhdOPzb/grass_cutter_machine_price_in_kerala.pdf
    • https://serutoposax.weebly.com/uploads/1/3/5/3/135398922/5706603.pdf
    • http://testertumentum.space/controle_chimie_5eme_les_melanges_aqueux65jqx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jezevenakos.myartsonline.com/kivanitowipenotewaf.pdf
    • https://a1d3e036-d9a1-4be1-9d2f-eedbb581cb22.filesusr.com/ugd/3ce946_c6b968f44b144f6fb0e535aa408fbfc6.pdf?index=true
    • https://91313464-3f42-441e-b0e8-b27065d471ad.filesusr.com/ugd/ee9d3f_6017ad2e549d43128644ec5280c92b4d.pdf?index=true
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_3ffa22710e064b1e8dc72c8b53c7592b.pdf?index=true
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_e5e5818d79064b2f9b0e5b5d2296a70e.pdf?index=true
    • https://fa0867c9-8cf0-46f9-bfae-aad8e49c21f3.filesusr.com/ugd/cdba2c_6b291f9ef5224974aeda462dafb79d38.pdf?index=true
    • 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_off0000f70d.bin
15436742ec368eb0c189e902954f13c18def6647be14ab5444a0e468c8aa2667		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF70D 5244 bytes
font_01_sfnt_off000108f8.bin
e2eaf1158cd20dc61bc8ccabd37e9c363a2d4645acc5131f578ada72c9e5d8a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108F8 10392 bytes

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