Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d97ddd55ed7e121…

MALICIOUS

PDF

83.9 KB Created: 2021-04-02 03:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 09c9cf2fffbdf628f12cddc4c883dd2a SHA-1: cb0b7776ae166cd14276c024b8123039158b7946 SHA-256: 1d97ddd55ed7e121bd6b449c1c899990c33afe64b5cf678b284fe5d53cbbd625
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 flagged as link farms. One prominent URL, 'https://leonvi.ru/wix?keyword=whirlpool+gold+gas+oven+manual', suggests a lure to a fake search result page. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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/wix?keyword=whirlpool+gold+gas+oven+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393755/normal_60625643a7308.pdfIn PDF document text
    • http://lologunaw.mygamesonline.org/how_to_make_a_groundwater_flow_map.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/what_is_the_symbol_for_the_nasdaq_100_index.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_605460cfa643f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463792/normal_5fe80276a5aa4.pdfIn PDF document text
    • http://rowewuxeg.getenjoyment.net/75619819093.pdfIn PDF document text
    • http://kirudikegopoded.sportsontheweb.net/busbar_rating_table.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459034/normal_6019cbcd1a3f8.pdfIn PDF document text
    • http://lafowesezojo.scienceontheweb.net/digital_to_analog_conversion_notes.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/40064431801.pdfIn PDF document text
    • http://zereteleriw.getenjoyment.net/84033706987.pdfIn PDF document text
    • http://dekiweragaf.mywebcommunity.org/nitugorupepiselapatuzatel.pdfIn PDF document text
    • http://zomixuxoluzijum.mywebcommunity.org/panitikan_ng_pilipinas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gidobiladuk.rf.gd/vabuximoligemu.pdfIn PDF document text
    • http://disoluje.myartsonline.com/88834910573.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/talosewuwupopasumubere.pdfIn PDF document text
    • http://merujepapi.epizy.com/89092600488.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/32429863862.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/35722869131.pdfIn PDF document text
    • http://vibirokudod.myartsonline.com/strategic_management_course_outline.pdfIn PDF document text
    • http://wesukudepabu.epizy.com/ahle_hadees_books_download.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/familia_asteraceae_caracteristicas.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/36679435899.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/br_ambedkar_image.pdfIn PDF document text
    • http://koxosam.rf.gd/dd_monster_manual_2_5e.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_off00010723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10723 5448 bytes
SHA-256: 3c3c1309a7e7e124e2d513c14b1fc015bf740575b57d70e40298c776f13f651e
font_01_sfnt_off00011990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11990 12868 bytes
SHA-256: 6ccdcccb267f92f1200558a3c8c06fc305457117d2a3e52113dbcf76658222d5

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