Malicious PDF — malware analysis report

Static analysis result for SHA-256 5278477d72e6569c…

MALICIOUS

PDF

80.0 KB Created: 2021-04-18 12:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 31ed0ed8f2d441b1e606233a53d7510f SHA-1: d8f3e71c262adb713fef44ea7dfc215045f45a19 SHA-256: 5278477d72e6569c965f21fa8c641b5e0ea7c1a0e92b416985585b0ac3109016
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominently featuring a search term related to vehicle sales, suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/strik?utm_term=honda+rebel+300+for+sale+austin+tx PDF link annotation
    • https://cdn.sqhk.co/zamodozitip/hfXWPhf/lowest_fare_calendar_flights.pdfIn PDF document text
    • http://tigawadilen.iblogger.org/calculations_in_chemistry_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/ggheBEk/70457617502.pdfIn PDF document text
    • http://watepavamosem.sportsontheweb.net/joindre_deux_ensemble.pdfIn PDF document text
    • http://pinenud.mygamesonline.org/gikowomugajipaba.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/giGdjc7/42496982813.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://netawuwimirixor.onlinewebshop.net/singular_and_plural_nouns_worksheets_grade_3.pdfIn PDF document text
    • http://sawudeje.epizy.com/57137713723.pdfIn PDF document text
    • http://zebivavube.epizy.com/39794313835.pdfIn PDF document text
    • http://xitiwefebulu.rf.gd/best_anti_acne_sheet_mask.pdfIn PDF document text
    • http://najufijipavavot.rf.gd/jakoribasupapek.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/fewifusufawamikawa.pdfIn PDF document text
    • http://folezazav.epizy.com/arduino_nano_pinout.pdfIn PDF document text
    • http://xetonuvabogo.rf.gd/pathophysiology_pv_book.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/singer_4411_vs_4423_price.pdfIn PDF document text
    • http://fametofet.rf.gd/papilas_filiformes_inflamadas.pdfIn PDF document text
    • http://wamigorudazuz.epizy.com/96817943521.pdfIn PDF document text
    • http://zugoxovok.epizy.com/classroom_assessment_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/rdr2_gunslinger_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bangla_old_song_audio_free.pdfIn PDF document text
    • http://xuperag.epizy.com/85336352956.pdfIn PDF document text
    • http://zuxekesimulir.epizy.com/email_writing_tips_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/15867258094.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_off0000f988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF988 5376 bytes
SHA-256: 7daad00f14ca7ca0f0caa2e1243c1ee9bad12c1ad2601a39a26a47704048a674
font_01_sfnt_off00010bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDD 11780 bytes
SHA-256: 4fa4d1d0edce103ad2bf92c923b68d33aa21261d86e256e88b6461d48cd49b31

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