Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e732502a82e651…

MALICIOUS

PDF

86.9 KB Created: 2021-03-04 03:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2bec9a15afee9cdbfbfe5b4af840fefb SHA-1: 32e20bc9a52b952c666690ad62df345dd00ae4b6 SHA-256: d8e732502a82e651cfa5225788a79914a2313cac932e7861828909f4f4407133
156 Risk Score

Malware Insights

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

This PDF document contains numerous external links, characteristic of a link farm or phishing lure, directing users to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, appears to be a lure related to game mods, aiming to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/award?keyword=how+to+get+mods+for+gta+online+ps4 PDF link annotation
    • http://fegiroxopirez.sportsontheweb.net/how_do_i_get_my_turtle_beach_headset_to_work_on_my_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475852/normal_5fe59f16f15da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388841/normal_5fcbc9f9a67d3.pdfIn PDF document text
    • https://cdn.sqhk.co/denepepunuja/herjbYd/30860635377.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fff6215bad9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461786/normal_5ff4202729f9b.pdfIn PDF document text
    • http://bodaweziwov.mypressonline.com/48463678968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374953/normal_5ffe1c69d4744.pdfIn PDF document text
    • https://cdn.sqhk.co/wufaluvete/VhjHhgu/runescape_shark_gloves.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401558/normal_60048ef1a7d58.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/giZUjgi/assistant_professor_jobs_electrical_engineering.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5fdc80f8672d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413111/normal_5fe38d24966dd.pdfIn PDF document text
    • http://vevovifox.scienceontheweb.net/geronimo_stilton_books_2018.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/rovatevimulodemonuku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fawixixajij.rf.gd/15263314758.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B1 5288 bytes
SHA-256: 16b41f418240cb7c31302edbf195970d6df802662b7c46b0a30bd8e81ad068f0
font_01_sfnt_off000107a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A7 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00011034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11034 15532 bytes
SHA-256: 608cb122d4f819e1506ae1ed36de9f3d29703dc9436bbe24865528b58d06513b
font_03_sfnt_off0001401e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1401E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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