Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdf55324e591ffd…

MALICIOUS

PDF

78.0 KB Created: 2021-02-25 02:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 37bdd9521162a10b2652ff7250ddbb8c SHA-1: 883c45953031ddb25b5a627331f898659d701439 SHA-256: ccdf55324e591ffd73eea86477028f4fa3d970310c1fefeac79b844bc623cca5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, suggests a lure related to an 'Adidas archive watch manual', which is likely a pretext to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=adidas+archive+watch+manual PDF link annotation
    • http://junumidutuzakox.getenjoyment.net/mixikedejaposagerowumoz.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/alto_shaam_halo_heat.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/the_eyes_of_the_dragon_princess_eng_sub.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/what_is_the_average_price_of_a_trampoline.pdfIn PDF document text
    • http://appletopshop.ru/369740427698hoo1.pdfIn PDF document text
    • http://silver35.ru/how_to_use_a_yeti_microphonejm9fg.pdfIn PDF document text
    • http://bighome.space/zajuxurodibonunowovatsf7c.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/lemizaror.pdfIn PDF document text
    • http://1yamal.space/88410824618vcbd.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/formato_de_recibo_por_honorarios_sunat.pdfIn PDF document text
    • https://jajewivazag.weebly.com/uploads/1/3/4/4/134491582/duneminotawo.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/scribus_tutorial_espaol.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/22952052468.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/60926983451.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/how_to_assess_reading_comprehension.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://rosajeku.myartsonline.com/rapibovowoxu.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/11073738550.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e74e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74E 5092 bytes
SHA-256: 0287657da5b0c62138ae01d10d794b302fcf2cbb4eb4eaa89bdcf56f69be83bd
font_01_sfnt_off0000f880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF880 10832 bytes
SHA-256: 1e93b53bf564ea085637851ffc156bcaed0abbf308618d84a4619223e051e757
font_02_sfnt_off00011d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D24 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.