Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ee27c280b86cce…

MALICIOUS

PDF

83.5 KB Created: 2021-02-27 02:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7eb556b1c3fc90b9f31c42a9a3e7a575 SHA-1: 7abaab3e324e165f884de4ea23f774f379d00223 SHA-256: 83ee27c280b86cce0bad987d80eb8536970fbd75c2366cc5c6830c775d66905a
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs and is identified as a link farm on disposable hosting, indicating a strong intent to redirect users to potentially harmful sites. The presence of embedded URLs and the nature of the heuristics suggest this document is designed to facilitate phishing or malware distribution.

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://mezovuduw.ru/123?utm_term=rock+band+4+pro-cymbals+expansion+drum+kit+xbox+one PDF link annotation
    • http://mumolazesinidix.getenjoyment.net/what_is_the_difference_between_hatha_and_vinyasa_yoga.pdfIn PDF document text
    • https://ravemazezaj.weebly.com/uploads/1/3/4/8/134885195/a4889eb5bdb1bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468812/normal_5fe778fbab952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468836/normal_5fcd384263b4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489058/normal_5fc830827c13a.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/tofele.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/golden_balls_best_split_or_steal.pdfIn PDF document text
    • https://putusura.weebly.com/uploads/1/3/1/6/131606782/ae5abf5f32f.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/terazolubixawunokixozifo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484814/normal_5fd1709f0ac62.pdfIn PDF document text
    • https://kabaposirivapej.weebly.com/uploads/1/3/2/6/132680813/bitulidogosat-govusijokutin-pizejeti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokirasur.epizy.com/nosagi.pdfIn PDF document text
    • http://waxodomopupu.epizy.com/79719606001.pdfIn PDF document text
    • http://lagunuriteg.rf.gd/how_much_sentences_are_in_a_short_paragraph.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/how_to_make_mead_like_a_viking.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/82017649348.pdfIn PDF document text
    • http://mawokale.myartsonline.com/organic_chemistry_1_final_exam_practice.pdfIn PDF document text
    • http://vuxubeso.rf.gd/67740258657.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_off000100ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100AC 5720 bytes
SHA-256: 340c90d96614869dc0613b8312e7c7feca833506c1c856ec44c3930c39df0aec
font_01_sfnt_off0001142a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1142A 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00011cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB8 10268 bytes
SHA-256: 35b5f4ee4c56a9591eef3a275a6ec226394700842dc2cbc8f66d066de09777e0

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