Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b770685f4e21578…

MALICIOUS

PDF

76.4 KB Created: 2021-02-26 11:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e637b67f4758c3f4222f63c2020f1d3f SHA-1: 1e00aec63291094cae02887fac87c99c482d45fb SHA-256: 1b770685f4e21578c1cadee175b294dd81168c47ed6d132d22a9da51957e52ca
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wb?keyword=les%20miserables%20movie%201998%20vs%202012 PDF link annotation
    • https://zefowumuf.weebly.com/uploads/1/3/5/3/135327275/tonurilezupali.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/1935689.pdfIn PDF document text
    • https://zijunuriv.weebly.com/uploads/1/3/4/8/134892089/jugigok-lovixuxasew.pdfIn PDF document text
    • https://terokusaf.weebly.com/uploads/1/3/5/3/135347070/3811759.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/jamapurav.pdfIn PDF document text
    • https://norakefepasuki.weebly.com/uploads/1/3/1/3/131382134/balupoben.pdfIn PDF document text
    • https://zawevujavesid.weebly.com/uploads/1/3/2/8/132814930/1ede0a9b.pdfIn PDF document text
    • https://guzezetuxavipub.weebly.com/uploads/1/3/4/7/134765233/xuwujikaja.pdfIn PDF document text
    • https://tofudilasikota.weebly.com/uploads/1/3/0/9/130969343/sages.pdfIn PDF document text
    • https://nisudine.weebly.com/uploads/1/3/1/4/131454656/xiziraki.pdfIn PDF document text
    • https://vuzupugum.weebly.com/uploads/1/3/1/4/131453250/lokelapox_bojivug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wozawexopad.epizy.com/35731910011.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/meratolo.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/dienes_blocks_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/caramel_cake_nutritional_information.pdfIn PDF document text
    • http://konevimojo.epizy.com/renewable_energy_ppt_template.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/53309324398.pdfIn PDF document text
    • http://mubidixosi.epizy.com/how_to_empty_thetford_caravan_toilet.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_off0000e9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B0 5648 bytes
SHA-256: 94d1e0d5aa0b19612059d88be05184a681f67db891480b376a73cf803690fa26
font_01_sfnt_off0000fccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCC 11184 bytes
SHA-256: 575af3341961cd6466ae68886014f20afcf1896fad3863094085995add353fcf

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