Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa77ba8c31e452bd…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 10:43:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1f0ce3ebc6e17ed492dd41102e86df92 SHA-1: 73f67bc81ca7f8bb7bdc9aea758cce61cfddc613 SHA-256: aa77ba8c31e452bdf1b78bcac5960f4aa2628377e41b4496de5c1d88ca50cc8d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://druttle.ru/wix?keyword=does+a+pegasus+have+a+horn+and+wings PDF link annotation
    • http://razvivatel.blog/resume_for_job_application_template4bsaw.pdfIn PDF document text
    • http://myimperfectmomlife.com/dudopifujizazavuzufevabmkolu.pdfIn PDF document text
    • http://romigeguwapefi.22web.org/bickerstaff_neurology_free.pdfIn PDF document text
    • http://pro-konditer.com/recent_trends_in_educational_managementomzr0.pdfIn PDF document text
    • http://design-kvartira.info/save_earth_2020u8m92.pdfIn PDF document text
    • https://jutoxanifi.weebly.com/uploads/1/3/5/3/135321179/gemubukoraxoxe.pdfIn PDF document text
    • http://tumbaa.space/teisingumo_slaugos_etikay341o.pdfIn PDF document text
    • http://ses-paypal.com/elite_dangerous_engineer_grind_guideui42v.pdfIn PDF document text
    • http://ledimpress.biz/176572064907xzj9.pdfIn PDF document text
    • http://salebox.shop/xatubupipugukebic6n6x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tixulubotatam.epizy.com/19666615797.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/set_background_color_android_textview.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/brand_influencer_contract_template.pdfIn PDF document text
    • http://bazogojuzularib.rf.gd/70084173644.pdfIn PDF document text
    • http://gawebunopom.rf.gd/fitur_answer_back_system_vario_125.pdfIn PDF document text
    • http://zuvolape.epizy.com/41980495289.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_off0000dc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2C 5340 bytes
SHA-256: 61b0c14b0c37d837d351fc759969aa06c1200f83d0274dba3fc2c34a87d5985c
font_01_sfnt_off0000ee6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6C 10472 bytes
SHA-256: a4e454504d962c019e584a73db30cc14ac0b449210a35b0bd53f79b65a933d75