Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8484af6f646e01…

MALICIOUS

PDF

72.8 KB Created: 2021-03-18 18:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 750bc461624705fd54f0077c16f59ed0 SHA-1: a3b28515bd29111d9fd86e149c69ed206c0e71ad SHA-256: 1a8484af6f646e01a1d68b770140b2963738eff412100a1028c1acc1eb248b20
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for malicious content. The document body, though heavily obfuscated, contains text related to 'wallpaper' and 'full hd', reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://nipisod.ru/123?utm_term=beautiful+wallpaper++full+hd
    • http://movawizaxaxato.mywebcommunity.org/kerag.pdf
    • https://static.s123-cdn-static.com/uploads/4382194/normal_5ff8293b40c0d.pdf
    • https://cdn-cms.f-static.net/uploads/4473619/normal_604cd46c6f81d.pdf
    • http://rawiduti.medianewsonline.com/manuvubefojuzepebowota.pdf
    • http://zifixoribe.scienceontheweb.net/acres_of_diamond_download.pdf
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fc6ae992fb4d.pdf
    • https://cdn.sqhk.co/batumozi/Yyicihg/autonics_panel_meter.pdf
    • https://cdn-cms.f-static.net/uploads/4365613/normal_60202e3131e20.pdf
    • https://cdn-cms.f-static.net/uploads/4482853/normal_5fdc63a8223d8.pdf
    • http://xasowokudat.medianewsonline.com/47197717014.pdf
    • https://cdn.sqhk.co/sejejajoxej/fKgfXUk/ligajelilutolugasizajozu.pdf
    • http://robugipunebib.mygamesonline.org/jaworirivozokiwodowunu.pdf
    • https://cdn.sqhk.co/kemuxilajig/afjbMxv/borubefa.pdf
    • http://fejekadiwoxobiz.getenjoyment.net/combine_like_terms_to_simplify_the_expression_2_5k-3_51_10k.pdf
    • https://marezovunit.weebly.com/uploads/1/3/4/7/134719427/483805.pdf
    • https://dataremidesop.weebly.com/uploads/1/3/4/6/134697992/390054945.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dapufojutujat.atwebpages.com/39494073130.pdf
    • http://sidepojedava.myartsonline.com/big_bang_theory_universe.pdf
    • https://s3.amazonaws.com/zesixefe/apkland_sports_tv_apk.pdf
    • https://s3.amazonaws.com/ninazarila/wawibofaruxalagu.pdf
    • https://s3.amazonaws.com/remeranexe/52231707132.pdf
    • https://s3.amazonaws.com/runuzitexokol/vudelominunuwifoba.pdf
    • http://fikelamizogu.myartsonline.com/zajiruse.pdf
    • https://s3.amazonaws.com/xufoxorog/acceptance_and_commitment_therapy_act.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2c3.bin
b616bafb98b70b5cd7c07c625e676de606e6bc738907f270fd61f7e771aaa559		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C3 4756 bytes
font_01_sfnt_off0000e315.bin
fe176331d87b7736b6b4e314d22dc41669d04a9a395d8e299e41baff11c83b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE315 10712 bytes
font_02_sfnt_off0001077e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1077E 4324 bytes

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