Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89e9edd6896fc93…

MALICIOUS

PDF

71.1 KB Created: 2021-01-27 06:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f593bdc5ea08649170eed0cd747266ef SHA-1: 250ae2baafedfcbeadc61204d31f72eae1dc0177 SHA-256: c89e9edd6896fc932c4262d607c947a1606d68c91d158a2fe3b679bcfc7fbab2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/infin?keyword=automatic+coil+winding+machine+project+report PDF link annotation
    • https://lerorenoj.weebly.com/uploads/1/3/5/3/135390996/dosujuwekowawo.pdfIn PDF document text
    • https://ruloxewetufo.weebly.com/uploads/1/3/1/1/131164393/fotekuviluvafot_jesepepiluzem_pipiwum_vaxulaxawa.pdfIn PDF document text
    • https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/gipufoz-rabikefefopifuw.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/sogagipigagukitaxubawuro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413705/normal_6005743aabe94.pdfIn PDF document text
    • https://ganokupojedozo.weebly.com/uploads/1/3/4/8/134890080/kaxaveja.pdfIn PDF document text
    • http://jufobimagif.iblogger.org/48460474523.pdfIn PDF document text
    • https://buparemekixa.weebly.com/uploads/1/3/0/7/130739227/f64544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tinosizifaxuful.epizy.com/tafopowafafamudamupazisib.pdfIn PDF document text
    • http://zulonojaminipe.rf.gd/30941844547.pdfIn PDF document text
    • http://dofanetanezuji.rf.gd/sad_trumpet_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/descriptive_essay_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/android_pie_samsung_one_ui_features.pdfIn PDF document text
    • http://givonomiruf.rf.gd/common_sense_book.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4A 5464 bytes
SHA-256: 2e5a1d283ae22ce7c2c659c250d47e9de4b9d2f30030cb2fd5288b8f89e74a61
font_01_sfnt_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 10092 bytes
SHA-256: 73bf5c314d18930338f780e80042392007b50f6f11e27018ce07029816e2e568