Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b2e215f095ca29…

MALICIOUS

PDF

79.2 KB Created: 2021-04-06 22:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d96bfeeea31f9c29f91610f924f6d50 SHA-1: dda2be1091f6c6e7a85df16cdce55b0c92b891e9 SHA-256: 15b2e215f095ca298a5a223eb3bf8d42c66ecb9ddd68d767192d9ec8726ea24b
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'worksheet answers', aligning with phishing or scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=1.1+limits+graphically+worksheet+answers
    • https://xefanopebowemid.weebly.com/uploads/1/3/2/6/132681782/1648831.pdf
    • http://lodomujimujug.mywebcommunity.org/how_to_start_internal_audit_of_a_company.pdf
    • https://cdn.sqhk.co/digodidazo/id0geIN/blank_name_generator_among_us.pdf
    • http://nuwojukow.mygamesonline.org/early_childhood_education_curriculum.pdf
    • https://cdn.sqhk.co/lokuwanij/Uicggdy/2019.pdf
    • http://lunatan.medianewsonline.com/blue_iris_software_update.pdf
    • https://nekawosewifij.weebly.com/uploads/1/3/2/8/132815774/fufipewadoja-biwujiberugem-kopinu-vujinasi.pdf
    • https://cdn-cms.f-static.net/uploads/4365612/normal_604cff4e6885c.pdf
    • https://cdn.sqhk.co/mixaluwekitu/hjcijib/hotel_maintenance_schedule_template.pdf
    • https://tazumeter.weebly.com/uploads/1/3/1/4/131438167/jopudituz_mafuxuzet.pdf
    • https://static.s123-cdn-static.com/uploads/4469641/normal_5fec4f6c0f205.pdf
    • https://banukusisazej.weebly.com/uploads/1/3/4/8/134893357/2301560.pdf
    • https://cdn.sqhk.co/bepotedaxus/Ty0ietj/26749433462.pdf
    • https://static.s123-cdn-static.com/uploads/4417226/normal_5fe15ab43c910.pdf
    • https://mawebexakonu.weebly.com/uploads/1/3/4/3/134390129/wuxepi-xomegep-gavuwazaxi-natijumawes.pdf
    • https://cdn-cms.f-static.net/uploads/4446259/normal_604a8403c58d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jijumupade/kathi_tamil_full_movie_480p.pdf
    • https://s3.amazonaws.com/kigavanus/el_catecismo_de_los_industriales.pdf
    • http://teropisarazo.myartsonline.com/zololusawewunejusod.pdf
    • https://s3.amazonaws.com/regegozumekoza/74750240049.pdf
    • https://s3.amazonaws.com/tufitijinexu/77914768128.pdf
    • http://wifofevowogak.onlinewebshop.net/56536604611.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_off0000f012.bin
ff4512ea0d56f03a4dc1551ef81fdffa3f3a9a1bbd81be4b7f3d9629fc262c01
pdf-font-stream PDF embedded font (sfnt) at offset 0xF012 5592 bytes
font_01_sfnt_off0001030e.bin
b7f26df49595b57156a186a987021109a6a169de25896f14498f884ca49af2a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 13248 bytes